WASHINGTON -- U.S. President Donald Trump's ex-strategist is blasting White House aides who publicly distanced themselves from the president's response to Charlottesville -- yet stick it out in the West Wing.

Steve Bannon -- in a CBS interview weeks after he was pushed out -- singles out Trump economic adviser Gary Cohn.

In Bannon's words, "if don't like what he's doing and you don't agree with it, you have an obligation to resign."

Cohn denounced Trump after Trump said "many sides" were to blame for the Virginia violence.

Bannon also uses the "60 Minutes" interview to criticize the Roman Catholic church, after church leaders denounced Trump's recent decision on young immigrants. Bannon argues that bishops "need illegal aliens to fill the churches."

The interview is set to air Sunday. Excerpts were released Thursday.