The advertisements, purchased by the American Freedom Defense Initiative, equated Islam with Nazism. In response, street artists covered the ads with images of Khan alongside messages like ""Calling all Bigotry Busters," "Stamp out Racism," "Free speech isn't a license to spread hate," "Islamophobia hurts us all," and "Racist." About the response, Wilson tweeted, "Some amazing person has been painting over the anti-Muslim bus ads in SF with Ms. Marvel graffiti...