By David Wetzel New York (Knewz) — A man put a gun to the back of an employee’s head as he robbed a fast-food restaurant, surveillance video shows, and Houston police are asking for the public’s help in bringing him to justice. According to KTRK, the video was released last week. The video can now be viewed on Knewz.com. Around 7:20 p.m. June 19, an unidentified man walked into a Burger King and went to the counter as if he was going to place an order. He then showed a gun in his waistband and demanded money from the cash register. Surveillance video shows the man handing a backpack to an empl…