For the majority? Come on, if you guys don't like private healthcare (and why would you?) then there's a democratic process you can follow to change it. Encouraging executions on the streets might feel good, but it's not going to achieve anything, even if you think it's justified.
There's a lot of things that can be justified for the good of society (when in Rome and all that), but I just firmly think this isn't one of them.
Pretty much. Look up "citizens united". It turned USA into an oligarchy. Billionaires are allowed to buy elections, and politicians are beholden to the billionaires.