Absolutely. Both "sides" must have a vested interest in seeing an outcome, or a third-party that forces them to a negotiating table.
In the context of the Louisiana situation, the best way to address the actions of the community is not to criticize their belief system (and thus reinforce their investment in it) but to foster understanding of the student's position in terms they can use to psychologically include said student in the social group. Beating groupthink is about breaking down social boundaries and emphasizing inclusive commonalities between all the parties, not further psychologically isolating a collective. While that can sound vaguely like victim-blaming when the collective is a majority, challenging groupthink is a difficult undertaking.
Viktor Frankl's "Man's Search for Meaning" is a good read for anyone and tackles some aspects of groupthink as an incidental discussion. If you're interested is this sort of thing, it's worth picking up (and fairly short).