“Cut war, not welfare” is a protest saying that has been printed on many images. The slogan has been used at many protest marches.
   
“Cut war, not welfare” was first used on a sign at a protest of the Afghanistan war in London on November 20, 2010. “As protesters behind her held signs reading, ‘Cut war not welfare,’ Sylvester told CNN the war costs too much and is no longer justified” was posted on CNN in the story “Protesters in London march against Afghan war” on November 20, 2010. “‘Cut war, not welfare’ sign at Trafalgar Square ant-war protest #afghanistan http://plixi.com/p/58072141” was posted on Twitter by Julie Mollins on November 20, 2010.
   
     
Wikipedia: Protests against the war in Afghanistan   
The proposed invasion of Afghanistan prompted protests with mass demonstrations in the days leading up to the official launch of the war on October 7, 2001. The continuation of the war in Afghanistan from 2001 to 2021 lead to further protest and opposition to hostilities.
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On Saturday November 20, 2010, protesters led by military families held a 10,000-strong demonstration march through London against the war in Afghanistan.
 
Twitter 
EJJMontoyaMalacara
@MontoyaMalacara
algunos lemas que aparecen son “cut war not welfare”
Translated from Spanish by Google
some slogans that appear are “cut war not welfare”
8:19 AM · Nov 20, 2010·Mobile Web
   
Twitter
Ms Defiance (Somaye) 🧡
@MsDefiance
On the Stop The War demo - Cut War Not Welfare!
8:54 AM · Nov 20, 2010·Echofon
   
Twitter
Julie Mollins
@jmollins
“Cut war, not welfare” sign at Trafalgar Square ant-war protest #afghanistan http://plixi.com/p/58072141
10:48 AM · Nov 20, 2010·ÜberSocialOrig
         
CNN
Protesters in London march against Afghan war
By the CNN Wire Staff
November 20, 2010 2:58 p.m. EST
London, England (CNN)—A large protest was happening Saturday in London against the war in Afghanistan, with organizers saying thousands from around the country would take part.
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As protesters behind her held signs reading, “Cut war not welfare,” Sylvester told CNN the war costs too much and is no longer justified.
 
Twitter
Sofie Sandoval
@sofisandoval
Cut WAR not WELFARE : Tony Blair=BLOOD http://twitpic.com/38xl3f
1:07 PM · Nov 21, 2010·Tweetpic for iPhone
   
Twitter
ShiaYouthAssociation
@MissMaryamMad
Thousands protest Afghan war in London <3

CUT WAR NOT WELFARE!!! http://fb.me/LQyVtpaY
5:10 PM · Nov 24, 2010·Facebook
   
Twitter
Adam
@AdamPembrey
Some young chappie was on the train with a ‘cut war not welfare’ placard. I wish he’d cut his hair not no of showers per month
2:15 PM · Nov 30, 2010·Twitter for iPhone
   
Twitter
matthew cassel
@matthewcassel
Cut war not welfare #demo2010 http://yfrog.com/h441oj
7:23 AM · Dec 9, 2010·TweetDeck
   
Twitter
Edward Mayes
@eljmayes
Placard in Westminster reads “Cut War Not Welfare”. Wrong march surely? #DayX3
8:47 AM · Dec 9, 2010·Twitter Web Client
 
Google Groups: alt.politics.socialism.trotsky
100,000 MARCH TO PARLIAMENT
rab
Dec 10, 2010, 6:16:13 AM
(...) 
There were numerous banners from universities and colleges across the country on the march and lots of placards.
 
Among the placards and banners were ones saying ‘Cut War not Welfare’, ‘Tories are the scum of the earth’, ‘Sussex University fighting for the future of education’, ‘David Thatcher – Education Snatcher’, ‘Oi, Tories, leave them kids alone’, Unison SOAS, RHUL Students Against Cuts, a PCS banner, and many, many more.
 
3 January 2011, Journal (Newcastle-upon-Tyne, UK), “Afghanistan war is a catastrophe,” pg. 10:
A contingent from Tyneside joined the Afghanistan: Time to Go demonstration in London in November, when thousands called for the troops to come home now and the Government to cut war not welfare.
 
Twitter
Haji M Hanif
@Haji_M_Hanif
LONDON - CUT WARS NOT WELFARE PEOPLE GATHER FOR ANTIWAR DEMONSTRATION ON 10TH ANNIVERSARY OF AFGHAN WAR ON SATURDAY
http://epaper.dawn.com/Advt.php?StoryImage=09_10_2011_001_005 -
9:20 PM · Oct 9, 2011·Twitter for Websites
 
Twitter
Sara Firth
@Sara__Firth
‘Cut War Not Welfare’ - #MillionMaskMarch #London
2:59 PM · Nov 5, 2013·Twitter for iPhone
 
Google Groups: g8alternativesglasgow
Cut War Not Welfare: Join the STUC march 18 October 2014, A Just Scotland March and Rally 18th October:10am, Glasgow Green
kboyd74
Oct 14, 2014, 3:57:20 AM
Cut War Not Welfare:  join the STUC march 18 October 2014, Glasgow
A Just Scotland,  Muster 10am Glasgow Green, March to George Sq
         
Twitter
Stop the War
@STWuk
80,000 march on Manchester #CPC15 to say #No2Austerity, Cut War Not Welfare, #ScrapTrident Not NHS, #NoTTIP
9:50 AM · Oct 4, 2015·Twitter Web Client
 
Twitter
Frankie McCamley
@Frankie_Mack
“Cut war not welfare” “Nurses not Nukes” “Free Palestine” “Kill the bill” “Tories Out” Just some of the many messages from protestors marching through #London #londonprotest
8:17 AM · Jun 26, 2021·Twitter for iPhone
 
LBC (Leading Britain’s Conversation)
’Cut war not welfare’: Thousands line streets in protest over soaring cost of living
12 February 2022, 16:55 | Updated: 12 February 2022, 16:58
By Megan Hinton
Protesters have lined streets across the UK to highlight the impact of the cost of living crisis on workers and their families.
 
The People’s Assembly co-ordinated the demonstrations, supported by trade unions, in towns and cities around the UK including London, Manchester, Newcastle, Bristol, Nottingham, Glasgow and Brighton.
 
Placards held aloft in Parliament Square in central London read “tax the rich” and “cut war not welfare” whilst others carried other messages objecting to a rise in energy prices.