Targeted assassinations should get more attention and resources. The ramifications of allowing an assassin to go free are much worse than a random killing. There is a small subset of the population that is both smart enough and crazy enough to successfully plan an assassination, that group of people needs to know that they won't have a chance of escaping and that they'll be hunted down.

Think of it this way: do you want your political enemies to start thinking, "Hey, I bet I could get away with assassinating that activist/politician"? Personally, my disdain of the American Healthcare complex is overruled by my opposition to normalizing political assassinations.