Condo boards are presumed to make decisions in the best interest of their communities. Most of the time this presumption is correct.
At times one or more individuals may base their decisions on personal self-interest. It becomes necessary for them to convince others to ignore or misinterpret available facts or information. This requires greater emphasis on opinion, manipulation or fabrication of information, or getting others to question what they know.
The Office of Secret Services (OSS), predecessor of the Central Intelligence Agency (CIA), created in 1947, had a sabotage manual for this very purpose. This page from their manual suggests how to successfully interfere with organizations.
Understanding these tactics helps identify individuals operating with a more self-serving agenda.