A supervillain plots the downfall of civilization from his hidden base and establishes a “shadow society” which will emerge from the ashes and take control of the world.
V for Vendetta?
Sorry, missed you earlier - also correct.
Actually fits pretty well, but not quite the one I was thinking of.
Two overprivileged toffs and their juvenile sidekick plunder a disabled sailor’s retirement fund, murdering many by the way.
Sorry, can’t solve these. But this one might be interesting.
A disgraced nobleman, abetted by a renegade priest, incite rebellion against the lawful authorities. The authorities are forced to extreme measures to put down the rebellion.
Robin Hood: Prince of Thieves (or some other version)
An elite government agent tracks a dangerous fugitive to his hideout in Brazil, then pursues him across the United States.
I figured as much, but I had heard far more about it being ripped off of a different story. Plus it only really works in very broad strokes; many of the details listed in the description only very very very vaguely might be reinterpretations of Hamlet, but they are definitely descriptions of The Lion King.
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After successfully (but at great cost) informing the outside world of their plight, the advocates for an oppressed people are systematically hunted and killed by assassins sent from their oppressors, who have gone to great lengths to pretend to distance themselves from the assassins.
I’ll take a stab at this being The Talented Mr. Ripley, but it’s a real stretch. Of course, many of these have intentional red herrings in them…
The Incredible Hulk
Treasure Island
Naturally! 
Munich
??
I Robot?
A young man who has devoted his life to success in his chosen support sees his dreams destroyed by a rival, who not only defeats him in competition but also steals his girlfriend.
It is no form of Robin Hood.
Indeed.
A supernatural god-like being visits a young girl and gives her strength, the abilities of telekenesis and levitation, command of languages, and also helps her discover her sexuality. Two strange men dressed in black force him to leave by using a form of sorcercy and chanting read from ancient texts. He manages to kill one of the men before he leaves, the other commits suicide.
That sounds like every young-teen “Loser boy defeats normal boy, wins girl” story.
VIP visits New York City, and sends two associates ahead to secure penthouse quarters in the historic Central Park West district. The visit is disrupted by a local gang of outlaws wielding self-made weapons.