Jem Aswad Senior Music EditorIn simpler times, it wasn’t uncommon to see Brooklyn-born New York Democratic Senator Chuck Schumer out and about in the city — but it was a little surreal to see him standing outside the indie mecca Baby’s All Right, located in the city’s hipster-centric Williamsburg neighborhood, on Tuesday afternoon, alongside LCD Soundsystem’s James Murphy and several of the owners or managers of the city’s top independent venues.The senator was stepping up to show his support