You have probably lost track of the number of articles about people who have jettisoned family members over contradictory and reprehensible political views. How do we get to the point that educated people, some skilled in philosophical argumentation, fail to make communicative progress with others? As the U.S. sinks further into fascism, why haven't philosophers' arguments against fascism caused fascists to do a regretful volte-face? Are non-fascist philosophers ill-equipped to deal with fascism? I ask those questions mindful of Stanley Cavell's statement that "Nothing a philosopher says can insure that you will not act immorally."
First, urge everyone to keep their cameras on. In most meetings, maintaining visual contact is the norm. But if this is not the practice, urge the moderator or your colleagues to keep their cameras on. Body language and facial gestures play a big role in persuasion. Seeing others allows you to "read" your audience. Strong body language and eye contact on your part will strengthen your pitch.
Evidence suggests that watching debates has no impact on opinions whatsoever. A study tracking 100,000 respondents found no evidence that debates helped voters make up their minds.