After Democrats seized the House in 2018, Speaker Nancy ­Pelosi became the firewall against impeachment. By the time she surrendered last fall, Pelosi had adopted the fiery zeal of a convert.

She now displays her hatred of Trump without reservation and accuses him of being a Russian agent, notwithstanding that special counsel Robert Mueller concluded otherwise. Anyone who disagrees with her is accused of being part of a criminal coverup, including Senate Majority Leader Mitch McConnell and Attorney General Bill Barr.

Given Pelosi’s position, these extraordinary accusations are unprecedented in modern times. Yet such vile extremism is the new normal on the left, which uses Trump as an excuse for its own abnormal conduct.