A video in which a US man says shows his neighbour to be racist has gone viral.

The incident, which happened in Los Angeles back in April, shows the man who goes by the name of "Dread Chapo" smoking a joint which is tied to one of his dreadlocks. In his hand, he has another lit joint which he also smokes.

Behind him, his white neighbour films him on her phone camera even though smoking cannabis is legal in the state of California.

Dread Chapo posted it to Twitter writing: "Racist white woman records me while I mind my own business."

The post has had a mixed reaction on social media.

Some reached out to "Dread Chapo" to offer their support while others felt his decision to tie a joint to his hair may have something to do with the neighbour filming him.

"Bro forget racism, if I saw you with weed tied to your dread, I'm def showing all my friends," wrote Twitter user @ilivelike61.

Lady in the video told me i couldn’t smoke in the building because of a law, so i go outside to smoke the next day and here she is staring at me for minutes and recording me. She ignores the other people smoking near me and focusing in on me. Video was shot in Los Angeles, California 4/20/2019.