You guys can sign it in the link. No post/zip code needed.
It is so sad that another person of colour died from police brutality in America. Aren't the police meant to protect the citizens? Instead of using disproportionate force? This should not be happening in the first place but the best thing we can do now is to make those who abuse their powers accountable.
https://www.justiceforbigfloyd.com/#petition