Roughly 80 percent of spray paint is bought by consumers planning do-it-yourself paint jobs. Unfortunately, others use spray paint as a tool for graffiti. Various laws restricting or banning the use ...

Of all complaints about life in San Francisco, graffiti is near the top of the list. It isn't the large, free-form murals, which have their own gritty charm. It's the "tagging." A wall mural is art.