Given the current situation everywhere, that you can’t shoot anything/anyone in public without a permit, this just might solve part of the problem. Meant to fit the end of your SLR’s zoom lens, this guy has a secret cut-out on the side and a precision mirror assembly inside. In short, you can shoot left, right, up, or down (it swivels 360 degrees), all while appearing to shoot straight ahead.

As good as it sounds,  you still have to be careful: as viewed from aside, you can see the cut-out in the lens.

Check video and more info here.