A massive demonstration has taken place in the German capital of Berlin to protest Russia's invasion of Ukraine.

Police say between 20,000 and 30,000 people gathered in central Berlin on Sunday.

Demonstrators marched and held up banners reading, "Stop War" or "Peace and Solidarity for Ukrainian people."

A woman protester said that it was unforgivable that even civilians were sacrificed. She said she wanted to show solidarity with Ukraine.

Another woman said the fighting must not escalate further, and that people must show they are against the invasion as a citizen.