I accept that a proliferation of cyclists will probably cause some added safety issues on the streets of New York, but the idea that a big concern of a bike sharing system would be that "clueless tourists would get run over and die"
is pretty hilarious. I'm sure getting whacked by a cyclist could cause some nontrivial injuries, but death is pretty unlikely, unless perhaps the crash sends you in front of one of those genuine death machines that travel around the city and regularly kill people.