Extremism threatens the stability of society.

He deeply believes in the principles of socialism.

He said something that threatened me.

He said he would reveal the secret to threaten me.

I was surprised by his extreme remarks.

His extreme actions surprised the people around him.

This company is very stable.

This machine has a function to even out the current.

He strongly believes in egalitarianism.

We should take responsibility as part of society.