What is a lock-out?
Its an attempt to force you out of your apartment by:

• Changing or plugging the locks on any of your doors;
• Blocking an entrance to your apartment;
• Removing one of your apartment doors or windows;
• Shutting off any of your utility services; or
• Removing your personal property from the apartment.

Lock-outs are against the law, and your landlord can be arrested and fined for locking you out of your apartment.