Bret Stephens: Groupthink has blinded the left

This year, several high-profile writers have left left-leaning publications after running afoul of what they describe as a pervasive culture of censoriousness, groupthink and intellectual-risk aversion. This month, Donald Trump once again stunned much of the liberal establishment by dramatically beating polling expectations to come within about 80,000 votes of another Electoral College victory.It’s worth asking whether there’s a connection between the two — that is, between the