Too bad it won't have any effect

Unless it's to put all these people on Barr's enemies list and subject them to retaliation.

More than 1,100 former federal prosecutors and Justice Department officials called on Attorney General William P. Barr on Sunday to step down after he intervened last week to lower the Justice Department’s sentencing recommendation for President Trump’s longtime friend Roger J. Stone Jr.

They also urged current government employees to report any signs of unethical behavior at the Justice Department to the agency’s inspector general and to Congress.

[...]

[L]awyers across the Justice Department continue to worry about political interference from the president despite public pushback by Mr. Barr, long considered a close ally of Mr. Trump’s.

Protect Democracy, a nonprofit legal group, gathered the signatures from Justice Department alumni and said it would collect more.

[...]

Prosecutors who currently work at the department should withdraw from cases that involve abuses or political interference, the lawyers said.

As a last resort, they asked Justice Department employees “to resign and report publicly — in a manner consistent with professional ethics — to the American people the reasons for their resignation.”

[...]

The letter comes days after some Democratic senators pressed for Mr. Barr to resign, and after the New York City Bar Association said that it had formally reported the attorney general’s behavior to the Justice Department’s inspector general.

  NYT

...but hey, do what you want...you will anyway.