Is anti-Wal*Mart snobbery racist?

We hit a few different stores last night looking for camping supplies--Kmart, REI, Dick's Sporting Goods, then Wal*mart. Admittedly, we live in a fairly "white" city. But, still, doesn't it seem odd that the only store I recall seeing non-white customers in was Wal*mart? (I'm not counting the Hispanic youth we saw getting busted for taking a wrapped MP3 into the bathroom at Kmart.) And why is Wal*Mart the only store that consistently has Spanish translations on much of its merchandise?

Wal*Mart genuinely serves a diverse clientele. If that means they don't have snob appeal, so what? I don't relish aiming to be a snob at this point in my life. Especially if that snobbery has an element of racism in it.