If a company that I really liked was facing a public lawsuit for discriminating against a group of people I belong to, I would have to say I would first be disappointed. I would probably read up as much as I could on the case, to see if it was blatant discrimination or if there was any room for a misunderstandings. If this was happening to a different company, one that I did not care about as much, I would not do this. This situation would likely influence how I would interact with this company moving forward. I would probably try to erase any history of me supporting the brand on social media (unfollow, unlike, etc.). In today’s society, any ties or links to a scandal or unethical company can reflect poorly on you.
As for supporting them and buying their products or services, I would probably withhold on doing that for a year after the scandal. Whether or not I support them after that is dependent on how the company and their PR department handles the scandal. If they address it and try to right their wrongs, then I would have no problem giving them a second chance. On the other side, if they try to cover-up the scandal and keep it on the down-low as much as possible, I would probably never give them my business again. Even if this company that I really liked hadn’t discriminated, I would have never applied to work their anyways. It’s kind of like when people say “never meet your heroes”. I would hate to go work for a company that I really liked, only to find out that they have a terrible work culture or unethical habits, because then it would be ruined for me.