[Yo-Yo]

Looks to me like two open-ended pipe bombs powered by either black powder or some similar fireworks pyrotechnic substance.

Is that a holstered REVOLVER on the hip of the security agent?

[wrench]

Revolver, yes.

You notice their cops can subdue a subject without firing 15 or 30 rounds at him as is done here.

I notice in the video, the shooter missed with the first shot, but hit with the second. And he was not real close, either. I was suspecting a near contact shot when I first heard of the shooting.

[marktwain]

Excellent.

Best image of the homemade gun I have seen. Good resolution.

Can you tell where the image came from?

[familyop]

"Looks to me like two open-ended pipe bombs powered by either black powder or some similar fireworks pyrotechnic substance."

A homemade muzzle loader with electric igniters of some sort instead of caps. The amount of smoke in the video shows that it was probably black powder.

"Is that a holstered REVOLVER on the hip of the security agent?"

Yes. Standard for security and police in Japan last time I read about it (quite a while back).

[Vaduz]

Left inside pocket for back up gun or cuffs?.