I went into my world and out of no were there was a 150+ villagers that I could not kill because of them I can not go anywere without the game freezing. Since I can't kill them I don't know what to do

Put the summary of the bug you're having here

What I expected to happen was...:
To go into my world were there was no villagers and play around

*What actually happened was
I came into the world and there was 150+ villager that I could not hurt or kill