Well, the reason we have the two words bias and bigotry is because they mean different things. We could also add allegiance and loyalty to the mix. I support Liverpool FC and I will doughtily defend their honour against ne'er-do-wells who diss them, including one deludee hereabouts who supports Sheffield Wednesday. But deep in my heart of hearts I know that better teams exist (though not Manchester United, it goes without saying). As long as rational thought ultimately trumps our unthinking loyalties, all is well. It's when we shut off that transaction that the trouble begins.