Can someone explain to me why tax breaks for the rich are bad?

Is this a serious question? Do you really think that 100 % of a tax cut is reinvested in the US economy? How about a realistic scenario? Trump gets a million dollar tax cut. He buys a hotel in France and pockets the rest. So the $1 million dollars that use to belong to the US government is now in France and in Trumps pocket which he can use later to lobby for more tax cuts. See there is this new thing called the global economy. Did you really expect this simpleton approach to work?