Tens of thousands of demonstrators converged on Berlin on Sunday to protest against against Germany's conservatives' norm-shattering overtures toward the far right.
Police said at least some 20,000 people had gathered just after the protest's 3:45 pm (14:45 GMT) kick-off time outside the Bundestag, Germany's parliament building.
But with demonstrators carrying placards and banners denouncing the conservative Christian Democratic Union (CDU) party arriving "from every direction", a police spokeswoman said that tally "could rise considerably".
Organisers planned to march towards the headquarters of the CDU, whose seeking of the far-right AfD's support for an anti-immigration bill in parliament last week sparked the demonstration less than a month ahead of a snap federal election.
Since the end of World War II, German parties have had an unwritten agreement not to work with the far right at the national level.
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