Thousands of demonstrators flooded a German city on Saturday, blocking major roads and disrupting public transport, in a bid to shut down the annual congress of the far-right AfD party.

Protests planned in Erfurt where delegates will celebrate party’s rise to become the country’s most popular political force

Alternative for Germany (AfD) gathers in Erfurt, in the eastern German state of Thuringia, tomorrow and Sunday for its national congress. Movements, trade unions, political…