By T.J. Pignataro - News Staff Reporter 03/26/08 A public alert was issued early this evening by Buffalo Police, warning that a gang could be staging rear-end collisions tonight on area roadways and then attacking drivers as part of an initiation ritual. Commissioner H. McCarthy Gipson called an emergency news conference at police headquarters just before 6:30 p.m. to make the announcement. He said police received "credible information" late this afternoon suggesting that the initiation ritual could involve gang member recruits intentionally causing rear-end collisions and then robbing or assaulting the other driver. Gipson suggested motorists be aware of their...