Don't yell, don't swear, don't flip the bird - and don't insult anyone's mother.
The San Francisco 49ers and the NFL have adopted extraordinary security measures for Sunday's NFC championship against the New York Giants after opposing fans complained of harassment by unruly 49ers faithful last week.
More security cameras and undercover police officers will be in place to identify abusive fans. San Francisco undercover police will be dressed in Giants' garb and on the lookout for unruly fans, and Giants ticketholders will be handed a card as they enter with details on how to contact police if they feel threatened. Season ticketholders have been warned to follow the NFL Fan Code of Conduct.
Authorities say they don't want a repeat of the threats and harassment that New Orleans Saints fans complained about after last weekend's playoff game. The nail-biting 36-32 win for the 49ers was the team's first playoff game in nine years, and a raucous c...