Bad idea. I can imagine how they react to those pictures

If you show those pictures during the games, they would immediately be taken back by how cruel CCP and Chinese are to those Tibetans. "Oh my God, they killed those innocent Tibetans. How horrible! how injust! Damn to those communists ...." At minimun, they charge China of politizing Olympics

See? you can tell Chinese from Tibetans. Most of western people do not. What would you do then? Give them some presentation during game break to explain to them?