self-defence BrE
self-defense AmE

Sometimes, self defence can cause serious harm to the other person.

They police say their action was in self defence and justified.

The military appear to be shooting at will, not out of self defence.

"Self Defence" or other reasons of this nature are not allowed.

Most of the display has never been used in anger, or self defence.

Give me something that could be stretched to 'in self defence'.

I do not deny that there is a right to self defence.

If they refused to leave, the British were not allowed to use force, unless it was in self defence.

If the cops want to qualify for self defence, more power to them.

If you do so, you will need to prove self defence.