I'm not convinced this is a hate crime. Yes, the nation of Israel was founded and remains an officially Jewish state.But it is a state, and states have policies not necessarily related to religion. Never mind that Israeli politics are wildly divergent. One can oppose a policy without hating the people behind it. 

Calling for Israel, or Iran, N.Korea, or any other state to be nuked is foolish, at best. 

The people placing the sticker are probably unaware that nuking Israel would kill hundreds of thousands of Palestinians and other Arabs within its borders.