I think I should stop jumping ahead and just stick to answering your questions. :)

So you answer is, no.......right?

Correct. My answer is no.

And I can take from that, that you, or anyone else of the normal human beings, on this world, would not have a right to do that to me?

Correct. Also no.

would I have the right, as a normal human being, to stop you take the purse and give it back to whom it belonged

Or if you were killing people with a gun ( I know it's an extreme example ;) would I have the right to stop you

These two questions are a bit trickier. Since I believe in the rule of law, your rights would depend on what the law has to say. So I can't say whether or not you have the "right", as such. But if it's just up to me, I'd say that you do have the right to stop me in both situations.