Troll, I suppose if you're very literal and legalistic, your defense of "Straight Pride" T-Shirts makes sense. If we were to follow that logic I suppose we should also defend "White Power" T-shirts.
The trouble is, the "Straight Pride" and "White Power" slogans have connotations and history behind them. In the United States, whites and straights have never been a persecuted minority - but they certainly have persecuted gays and nonwhites. So yeah, I'd say that "Straight Pride" and "White Power" slogans have connotations that make them inappropriate.
The pink triangles are especially powerful symbols that give the reason for the need for "Gay Pride" programs. Those pink triangles were first used by the Nazis to identify homosexuals, just like they used yellow, six-pointed stars to identify Jews. Are you suggesting that perhaps we should use a lightning "SS" symbol to identify straight whites?
-Joe Offer-