Something tells me there's a common denominator..... Forget the fries, just walking into McDonald’s can get you killed By Steve Cuozzo January 5, 2016 | 12:19am MDeals aplenty at One and Three World Trade Center The tragic murder of McDonald’s hero Adam Garcia, 28, who was trying to protect customers from a homeless psychotic, should be a wake-up call about what’s going on at the Golden Arches’ 250 New York City outlets. Garcia’s stabbing on the sidewalk outside a McDonald’s in The Bronx early Monday morning was at least the sixth case of violent mayhem at one of the chain’s eateries since March 2015. The Big Mac attacks have left three dead and five seriously injured. No wonder: Too many McDonald’s outlets are sleaze pits. Their downmarket, let-it-all-hang-out atmosphere draws lowlifes who couldn’t care less that the profit-challenged chain boasts it now sells antibiotic-free chicken. The recent crime wave makes McDonald’s desperate attempt to hop on the “wellness” bandwagon even more grotesque. Prior to this week’s murder: A 15-year-old girl was stomped nearly to death in March at a McDonald’s on Flatbush Avenue in Brooklyn, where police were called to break up fights 10 times in the previous 14 months. A breakfast brawl between couples at a McDonald’s on Lexington Avenue and 125th Street in August — presumably not over “all-day breakfast” treats like sausage, biscuit and egg (520 calories) — spilled onto the sidewalk where a man was stabbed to death and a woman critically wounded. A dispute that started in the druggie-infested “zombie McDonald’s” on Eighth Avenue near West 35th Street turned into a sidewalk chase in November, ending in a lethal shooting two blocks away. Thugs assaulted, robbed and shouted homophobic slurs at a young man at a Crown Heights McDonald’s in November. Proving the bloodshed isn’t limited to rough neighborhoods, two people were slashed last week in a McDonald’s on Third Avenue at East 58th Street in Manhattan. The “cutting incident” is under investigation. Everything about McDonald’s is creepy, including a scandalous campaign by a “brand ambassador” named John Cisna to convince schoolkids that they can lose weight as he did — 60 pounds in 90 days! — by eating every meal at the Golden Arches. Supported by the chain, the former Iowa science teacher has barnstormed schools around the United States, telling kids, “There’s nothing wrong with fast food. There’s nothing wrong with McDonald’s.” His propaganda has been condemned by advocates for better school diets — among them, Lunch Tray blogger Bettina Elias Siegel, who launched a petition that’s drawn 80,000 signatures urging McDonald’s to quit sponsoring him. Cisna has avoided New York, though. Maybe he’s afraid of McDonald’s branches that are giving “social clubs” a run for their blood-soaked money. Their appeal to homicidal lowlifes calls not for petitions, but padlocks.