The ONLY easy way is to call the police and ask them to come and do a civil standby while you remove your belongings.

You could hire someone to remove your belongings, advising the people you hire to call the police BEFORE they arrive and request the police to meet with them at your apartment to do a civil standby while they remove your possessions.

The police are paid to keep the peace.

Asking them to do a civil standby is not hard, nor is it new for them.

They are professional peace keepers and don't worry about so called "biker thugs".

I'm sure you recall the excellent work of the Waco, Texas police a few weeks ago as they arrested 200 alleged "biker tough guys".