Hundreds of anti-Trump protesters marched through Brooklyn on Thursday to call for the president’s impeachment after his supporters launched an insurrection at the US Capitol Building.  Beginning with a rally at Barclays Center, the demonstrators marched down Flatbush Avenue to the Prospect Park West apartment building of incoming Senate majority Leader Chuck Schumer — where they demanded the legislator act to both remove Trump and expel the Republican politicians they claim are equally responsible for perpetuating …