Frezzia Herrera and her husband were given a 14-day eviction notice to leave their Roxbury apartment in 2013. Instead of leaving, the couple said they chose to fight the notice, and since then, they have spent the past five years pushing back against the eviction and annual rent increases with lawyers.

  Around 100 people gathered at Walnut Park, Roxbury Saturday afternoon to protest against rent increases and poor conditions they said have been imposed on them by their landlords. The...