I don't know about anyone else here, but I have never been overly persuaded, or disuaded by "T" shirt messages.
I live just south of San Francisco and have started seeing those t-shirts everywhere.
The problem is not the t-shirt per se, but the ever growing numbers of people wearing them.
They will end up moving to the suburbs as middle and upper middle class adolescent gangsta wannabees with too much pocket money try to look "bad".
Speak for yourself...I have Kept on Truckin' for the last 30 years...