A bloody fight broke out between supporters and opponents of US President Donald Trump in Long Beach, California, Fox News reported.
About a dozen Trump supporters stood outside the Long Beach Convention Center, using bullhorns and chanting “Four more years!"
They were approached and attacked by a group of Trump opponents.
During a scuffle, one of Trump's supporters was hit in the face by a scooter.
Three people were arrested as a result of the incident.
