It's easier more than ever these days. People think we're so advanced because we invented TV and the video camera, etc. but since 9/11, the law just kinda shoved it's head up it's ass and could never pull it back out. They're too focused on asinine things, and they always have been. Do you know how many unsolved murders and missing persons there are in this world, in America, in Europe?
Besides, if a corporation can manipulate constitutional law with mere money, lawyers and good ol' fashioned brute force intimidation, what do you think they can do when they want something more? Do you know how easy it is to fake a suicide or car accident?
Tsk tsk, open your eyes, welcome to the shadow world.
People always assume an assassination is a crude, violent act. Most of the time, it's an entirely separate species of beast. Most people are convinced that assassinations only happen with violence, but it's almost never the case anymore. Besides, it's much more easier to intensely discredit someone now, and absolutely humiliate them in the most absurd ways. However, if they need to be "dead", as in.. just dead for whatever reason, most 'intelligent' and calculating forces these days are already 10 steps ahead and see any sort of threat before it's ever made, so the "car accident" occurs 5 steps before there is ever suspicion.
There have been commercial airlines brought down for one single target, killing everyone else on board as well. Not too hard to trigger a 'failure' on a piece of equipment designed to rocket into the sky and fly 30,000ft in the air. When a whole jet comes crashing down, it's highly unlikely the first suspicion will be "single target assassination", but it's happened. Just saying.