Thousands of mostly young people rallied at Berlin's Brandenburg Gate on Saturday as part of a nationwide day of youth protests, Euronews and rbb24 reported. Police put the crowd at about 5,000, while the organizers, a group called Gen Z regelt, said about 11,000 people took part, the outlets said.

The group's demands include more money for schools, action on rising living costs and more climate protection, Euronews reported. It also opposes bringing back compulsory military service, the outlet said.

The rally stayed peaceful, rbb24 reported. Police had about 1,500 extra officers in the city all day, the outlet said.

Pro-Palestinian flags and slogans were widely seen in the crowd, Euronews reported. Some shops on major streets put up barriers in case of looting, the outlet said.

A second march later in the day turned tense, rbb24 reported. About 700 people gathered at Rosenthaler Platz, and the crowd grew to about 3,500 as it moved toward Prenzlauer Berg, police said. Eggs, stones and bottles were thrown at officers, and fireworks were set off, police spokeswoman Julia Scholz said, according to rbb24. Several officers had minor injuries, and the march was stopped early.

Police said the evening march was organized by a left-wing group, rbb24 reported. The organizers of the afternoon rally had distanced themselves from it and called for nonviolence, the outlet said.

There were clashes in other cities too, rbb24 reported. In Frankfurt, police used water cannon after officers were hit by stones, and at least one officer was hurt. Water cannon were also used in Hamburg and Cologne, the outlet said.

What we know: The Berlin rally was peaceful, but some later protests turned violent.
What we don't: Whether the youth protests will keep growing in Germany.