cubans mostly leave to escape the extreme poverty US-backed economic sanctions have laid upon the country. and even then, it's done fairly well compared to other similar island nations in the region not under such ridiculous economic sanctions...... the handful of 'political escapees' are more like power hungry political hopefuls, licking their chops for a chance at power...
every cuban exile i have ever met misses their homeland deeply, they don't hate their government or ours, all they care about is their families, and somehow achieving a happy life.... they could care less about marxists, capitalists, communists.... they don't give a rat's ass about any of it....
anyone who leaves their homeland presumably does it to get a better life, only fools and political hacks do the opposite.
nobody is beating down the doors of north korea, even the chinese who cram themselves into cargo containers to get to the US, dont try to sneakl into north korea.
dominicans arent sneaking into haiti, and they are on the same fucking tropical island!
jamaicans arent sneaking into cuba, but lots of cubans sneak into jamaica. most cubans dont risk prison or their lives to get to jamaica, they paddle a little harder and head for miami.
the cuban exodus began in 1952, when the bautista regime started cracking down on opposition groups, when fidel and his armed rebellion popped up, everyone who could escape did so, taking everything they could carry. fidel's marxist revolution didnt appear in a vacuum, but claiming the bautista regime was the cause of cuban flight is specious in the extreme.
UNREST (and soviet agent provocateurs) destabilized the island's populace, when bautista (who was in fact a dick) responded with repression, and fidel was just the turd who floated to the top and turned the general unrest into a marxist revolution. the unrest (and soviet agent provocateurs) didnt create fidel, fidel and his marxist junta are a symptom of bautista's failure, but no matter how much of a dick bautista was, only a marxist regime can drive that many people out of a pleasant tropical island, and turn a self-sufficient paradise into a pile of shit.
if i could wave a magic want and make cuba, mexico, haiti, and guatamala into free peaceful and HONEST democracies of any stripe (socialist, capitalist, parliamentary, whatever) most of the people who have come to america would happily go home, but magic isnt real. those countries are shitholes because they are run by shitheels, corrupt, grasping fools, and marxist dictators. nobody wants to live under a repressive regime, especially not an incompetent one. bautista was a greedy fool, and an incompetent dictator, but he looks like a goddamned genius compared to fidel. bautistra represents cuba's "good ol' days", and that fucked up, but it's not america's fault. as much as you would love to blame america for every problem, every military junta, and every oppressive marxist regime, it just doesnt work.
cubans ELECTED bautista el presidente, they chose poorly, and didnt get another chance to vote for decades.
cubans ELECTED fidel el presidente, they chose poorly. they wont get a chance to vote again without another revolution.
North Korea CHOSE the Kims, and they too chose poorly.
China CHOSE mao tze tung. and they chose poorly.
Venezuela CHOSE hugo chavez, and they chose poorly.
afghanistan CHOSE the talibs, and they chose poorly.
Germany CHOSE hitler, duh.
Italy CHOSE mussolini
the RE-Installation of the Pahlavi Dynasty in iran is the only real example i can think of where any documented US assistance overthrows a democratically elected government. every other claim i have heard is just conspiracy theory.