Social justice is actively harmful to due process, because it makes social media the jury and throws away any chance of the failed candidate getting a fair trial. The collateral damage is the reputation of the company, who may or may not have done anything wrong - we may never know because the process was not followed. It's a lose-lose process, no winners, just some extra brownie points for the SJWs. This is why it's more of a religious crusade than anything else.
I also think social justice is actively harmful for the groups it is intending to "enable", because it makes interactions with members of said group become riskier than ever before. People will just avoid the interactions as much as they possibly can to avoid the risk. See #MeToo and recent statements from WallSt as an example.