And you can, too!

Look here for the download (bottom of the page; it's abandonware)

It's small, has a very realistic physics engine for bullet ricochets, and is worryingly addictive.* You get points for how accurate your assassination is to the real one, so, after the first few times, where you try to get perfect headshots on everyone in the Presidential motorcar, it's actually really challenging.

My current record is 535 points out of 1000, but I forgot to take a screencap.* That's all the necessary injured/wounded/killed, plus timing bonuses for the first shot, and an anatomy bonus for the second one.

How well can you do it?