I would think they could in the case they are being discriminated against for trying to sell t-shirts,,,,or posters..etc
I was in foodland tonight and they were selling posters in a box by the door and sure enough the
poster in the front of the rack was a big cannabis leaf and some funny saying about being high......so the senates worries
were for naught...since this type of product already existed and has since the 1970's....,