The New York Knicks won a championship for the first time in 53 years. The celebration in the streets afterwards was unexpected.

City has become caught up in the drama as team stands on brink of a first NBA championship in 53 years

On a warm May night in 1973, in a working-class New Jersey suburb just across the Hudson from Manhattan, 17-year-old Greg Hourdajian stood in front of a television set shouting…