Flag Waving Flip-Flop

Has anyone bothered to point out that the righteous rage on the right over the flying of the Mexican flag by some attendees at the pro-immigration protests is coming from the same people who defended the confederate flag as a source of “southern pride” (as opposed to the rallying symbol for slave-owners and their defenders)? They were for taking pride in regional/ethnic differences before they were against it. Seems like a racist double-standard to me, but pretty consistent if you stop taking conservatives at their word.