Is it suicide if you have the power to resist someone trying to kill you and don't protect yourself?

No, one’s resistance does not need to be exercised in the face of another’s willful deed.

Some would sat it is a suicidal decision.

Religious folks might say it is martyrdom, in the sense that you would be dying for some reason external to yourself that you believe in.

The choice of when to live and when do die is individual. We can’t put ourselves in the mind of someone else.

You mean like suicide by Police Officer?

Hard question to answer since I have no idea if any of those people really lived except for Socrates, whom I assume did. I thought you were talking more about if you were being robbed at gunpoint and didn’t fight back.

@smudges Your interpretation is ok.

Sometimes especially in cases like those cited by the OP, there’s a fine line between suicide and martyrdom or heroism.

It’s a form of suicide. Death wish. Instead of going solo you let others participate ( aware or not ) into all that real life tragic “drama”.

Only if the deceased intended it to be. We’ll never know.

Here is a special case. A person commits a crime whose punishment is the death penalty. The crime is committed for the sole purpose of dying from the death penalty. Is that suicide? Would elimination of capital punishment cut down on such crimes?