You’re right, Europe has let in too many Muslims for their own good....
Historically Europe corrects such errors with some sort of a purging campaign.... Like Ferdinand and Isabella ridding Spain of Muslims in the late 15th century followed by the Spanish Inquisition which was an attempt to root out any 5th column types.....
Don’t let the headlines fool ya.... Europe is already starting a pushback on their jihadists....and sooner or later they’ll explode on them......
.....And I sense it is starting to happen in the USA, as proof, look at the “Draw Muhammed Day” event in Garland, TX, which while there was an effort of two jihadis to try to kill her, they were both taken down. Pushback has started.