The activities of the radical party are threatening social stability.

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.

We participated in the local cleaning activity over the weekend.

We are actively participating in local activities.

We should take responsibility as part of society.