Thousands of opponents of Germany’s far-right AfD took to the streets of Erfurt on Saturday and blocked roads to the party’s annual conference ahead of regional elections that could see it take power at state level for the first time. Protesters from unions, civil society groups and left-wing parties gathered as large numbers of police, including reinforcements from across Germany, were deployed ahead of the AfD’s two-day annual conference. AfD stands for Alternative for Germany. Watched by...