OKLAHOMA CITY — Animal-rights activism is colliding head-on with rural tradition in Oklahoma, where voters will decide Nov. 5 whether to ban cockfighting in one of the last three states to allow the bloody spectacle. Supporters of the proposed ban say cockfighting is inhumane and gives the state a bad name. Opponents say the sport, also legal in Louisiana and New Mexico, is a livelihood for people who raise the birds and is no crueler than the way chickens are raised and slaughtered. Cockfighting became legal in Oklahoma in 1963, when the state Court of Criminal Appeals ruled that...