There already is? https://en.wikipedia.org/wiki/Hamas#Extrajudicial_killings_o... (there even is a larger article about "Capital punishment in Gaza" if that wasn't enough already: https://en.wikipedia.org/wiki/Capital_punishment_in_the_Gaza... [goes beyond Hamas])
Did you honestly spend any time at all to see if it was already included in Wikipedia or not before you wrote your comment?
I don't see "genocide" there. It all sounds just like some killing here and there like everywhere else whereis HAMAS does systematic and methodical killing of other clans/tribes/families, and in such a tribal society it falls under "genocide".
Fair enough. In case you didn't know, if you want to have any chance of impacting what's on Wikipedia, create an account and make your point clear in the talk page. Protip before you do that: Don't randomly use ALL CAPS, don't engage in bad faith arguments, and honestly listen to what others say before replying. It isn't impossible to convince people if you can remain neutral about it. Good luck and more importantly, have fun!