Here is an example of a man exhibiting authentic masculinity. See this report about teacher David Benke who no doubt saved kids from being shot by a man with a rifle as they were leaving their Middle School at the end of the school day. As it was, two kids were shot (not fatally). Thank God no more were hurt or killed.
This is the sort of thing that a real man does--protect those who need protecting whenever he has occasion to do so. See a second article here.
Here is a video news report: