Is there a crack in Germany’s political firewall against the far right?

Germany’s likely next Chancellor Friedrich Merz just shook up the election campaign. He took a major political risk by relying on the far-right AfD for a majority in parliament for the first time. Tens of thousands took to the streets protesting the move. Did Merz just cancel his smooth ride to the chancellory? Or could he break the political paralysis around the AfD’s lifeblood issue: Migration.