Share 'J'Ouvert Festival kicked off in Brooklyn amid heavy security as 4 people are shot overnight - one just blocks from the parade route'

Tens of thousands of revelers gathered on the streets of Brooklyn for the J'Ouvert Festival early Monday  But this year saw a heavy police presence, barricades and metal detectors amid fears of violence Two people were murdered at J'Ouvert last year, despite an increased police presence, and in 2015, Gov. Andrew Cuomo's aide Carey Gabay was killed by a stray bullet Last night, four people were…