HUGH HEWITT: A special counsel needs to investigate the FBI and Justice Department. Now.

The Post reported that a former top FBI official, Peter Strzok, who had been assigned to and then removed from special counsel Robert S. Mueller III’s investigation, had “exchanged politically charged texts disparaging [President] Trump and supporting Democrat Hillary Clinton” and that Strzok was “also a key player in the investigation into Clinton’s use of a private email server.”

This is a blockbuster revelation, carrying the possibility of shattering public confidence in a number of long-held assumptions about the criminal-justice system generally and the FBI and the Justice Department specifically. The Justice Department should appoint a special counsel to investigate Strzok’s actions as soon as possible.

The Strzok report comes on the heels of the widely derided Justice Department investigation into IRS discrimination against conservative groups, including the disposition of allegations against IRS senior official Lois Lerner, and after the wildly erratic behavior of then-FBI Director James B. Comey during 2016. It also follows the vote to hold then-Attorney General Eric H. Holder Jr. in contempt of Congress — the first ever against a sitting member of the Cabinet — with 17 Democrats voting in support. Mix into this battering of the Justice Department’s and FBI’s reputations the still-murky charges and counter-charges of abuse of “unmasking” powers during the waning days of the Obama era.