This depends very much on the facts of each case, but some possible examples include:

• Repeated visits by the landlord without justification;
• Interference with doors, windows, locks,
  water or power supply;
• Attempts to force the tenant to leave through noise, harassment or threats;
• Entering the premises for an inspection or repairs without giving notice in accordance with the RTA;
• Demanding access beyond that provided by the lease, or otherwise required by law.