I don't think Donald Trump would tell a cop "you gotta go" unless that cop was crooked.
Justin Harris pushed a policy that would endanger whistleblowers reporting dirty cops. He also has a "Charity".
For example, the contract in Glendale, Arizona, is one of nine cities where the union contract restricts anonymous complaints from being investigated. The contract requires the complaining party to sign both the complaint form and also an affidavit of truthfulness. Justin Harris, a Glendale police officer and union representative, explained he wanted the complainant to come in. “There’s a form, and it lets the taxpayer know that if you’re knowingly and intentionally making a false statement, you could be prosecuted.”
https://www.hillmanfoundation.org/sidney-awards/bargaining-away-accountability-reuters-wins-february-sidney-exposing-police-union
https://www.hillmanfoundation.org/sidney-awards/bargaining-away-accountability-reuters-wins-february-sidney-exposing-police-union
https://www.bsa-us.org/
https://givebutter.com/policeweek
He's also a member of the Border Security Alliance.
https://www.bsa-us.org/