The pictures seem to be real/unedited. As can be seen on the shirt its the Denver Communists, and these pictures might have been taken from their instagram: https://www.instagram.com/p/DQAXxNjEZbM/?img_index=3

And the reason why the whites don't match is because they printed it out and glued it onto some cardboard(?):

Also yes, the banner in the background says "Globalize the Intifada"