Amir Tsarfati posted this video on Telegram and said this about it:

"The military wing of Hamas publishes documentation of large short-range rockets being fired at assembly areas. Pay attention to an interesting detail: this operative of the military wing of Hamas is dressed in civilian clothes while operating a mortar launcher.

This is an important point to show the world. He disguises himself as a civilian, while engaged in military activity, so that later they can claim that Israel is harming civilians...