Because Palestine is their land Jews should go back to Europe,America,North Africa,Yemen,Iraq or Live peacefully with the Palestinians with equal rights and obligations...
In the beginning there weren't much tensions but as millions came and took away the land of the original inhabitants the Zionists couldn't expect any good will. UEFA point is relevant as Israelis have decided themselves to move to the Middle East and out of Europe so there's no point in letting them into European organisations. If Israel wants to maintain they have to start to communicate with their neighbors in another way than bombarding their towns or they will cease to exist(especially with the new developments in the ME).