Legalize Teaching. RAYGUN has long supported public education, and sales of this shirt will help fund our continuing projects in the public school systems in the Des Moines, Iowa City, Cedar Rapids, Cedar Falls, Chicago, Omaha and Kansas City areas. Black Screen Print on a Heather Grey T-shirt (65% Polyester / 35% Combed Ringspun Cotton). Cut and sewn sweatshop free. Designed and printed by Union Labor at RAYGUN.