Absolutely the wrong way to hold a knife. Efficiency depends on the desired end result. If, in this case, one was demonstrating how to remove the tops of peppers for stuffing, it would be appropriate.

Acting like a dick won’t make yours any bigger.

It is definitely not, as you stated, “A cruel and senseless violence [sic] demonstration made by Muslins (multiple lightweight cotton cloths in a pain weave). So, I completely understand your confusion.

Now now Mr. Trump, head back to Twitter where you belong.