Conversation so far:
what is something Cheri Honkala was criticised for?
Honkala has been a controversial figure throughout her career as a protester and organizer.
What caused the controversary?
said "She has not been working, rolling up her sleeves on issues like Community Legal Services does.
She has never availed herself [of] that opportunity.
What was she accused of doing?
the group was actually preventing its poor followers from obtaining housing through its tactic.

Question: what was the tactic they used?
Self-contained rewrite: what was the tactic Cheri Honkala's group used to prevent poor followers from obtaining housing?