Ah yes the convenient 'attack' on one's own people that gives the public backing to go to war. Most people, especially Americans (the country is so vast, many don't even have passports), are like Jumpers, they don't really care what goes on outside their country as long as things are okay at home. But if some terrorists come to their country and kill their citizens, then they get angry.
It happened in the First World War with the sinking of the Lusitania, again at Pearl Harbour in the Second World War, US submarines were 'shot down' by the Vietnamese in the Gulf of Tonkin. How genuine these 'attacks' are, I'm unsure. Not saying they were planned by the US necessarily, but I think they were complicit (at least in some). There is plenty of info on 'Operation Northwoods' as well, another of these 'false flag' operations (attacks on one's own people to engender support for war) that was never carried out against/'by' Cuba. It is a common war strategy that was even used by Caesar so the legend has it...
America really do have a despicable recent history that never gets heard over the cries of 'the American Dream!', 'Freedom!' and 'Democracy!'. Most countries have done similarly disgusting things (not just false flags, there is a list longer than my arm), but few are afforded such a pedal stool (certainly in British culture). Disgraceful acts are kind of understandable though, when you remember they were a part of the British Empire!!
Hello NSA.