"and ‘thugs’ are ostracized for doing the right thing in speaking out? Why?"
Where to start? Being ostracised is surely a better outcome than being beaten and burned to death over a false allegation? (References at the end).
Who decides what is the 'right thing'? Tommy Robinson had jeopardised a trial by broadcasting details. He was warned not to, but did the same again. There was nothing to gain but publicity for him, while his actions could have caused a mistrial, even potentially putting the accused back on the streets. Was that the right thing to do?
There is a way of speaking out that is generally accepted. There are newspapers and broadcasters who I don't like, but they have a role to play. Robinson calls himself a journalist but apparently thinks he alone is exempt from things like fact checking. He is not sanctioned for speaking out but for crimes.
The stench of false allegations lingers. Harvey Proctor says he lost his relationship, job and home over false claims. Cliff Richard successfully sued the BBC for publicising a search of his home. The BBC and police came away looking stupid, but Richard is still tainted, as were the Guildford Four and others.
If Robinson is right, and I am not in a position to prove him wrong, why would he resort to hooligan tactics to prove it? Vetuste_ennemi (I think) posted a video of Andrew Norfolk discussing his role as a journalist, with not a mob in sight. The knife crime thread currently on AB highlights public concerns about safety on the streets. How many would feel safer if large gangs were roaming, dishing out summary justice without any other evidence than skin colour or religion? There are Jewish night patrols in New York. What about Moslem patrols in UK?
Child rape in Rotherham might be similar to child rape in Rochdale, but knowing that does not push an investigation forwards. The evidence must relate to the specific incidents. A police officer is not the person to do the search for links. We already tried that with Satanic abuse. Each incident is unique. Journalists can and do look for the bigger picture, and rightly so, but it sells newspapers, it doesn't protect children. I have had to remove a good worker from a team because they were too busy trying to make connections to other cases that they were not focusing on the children they were supposed to be protecting.
Tommy Robinson is not making children safer, but he is putting innocent people at risk.
https://www.telegraph.co.uk/news/uknews/crime/10421076/Police-suspended-after-innocent-man-accused-of-paedophilia-burned-to-death.html
https://www.bbc.co.uk/news/uk-england-hampshire-45395607
https://www.theguardian.com/uk-news/2018/nov/08/manchester-families-targeted-with-hoax-paedophilia-accusations
https://www.samuels-solicitors.co.uk/news/accused-paedophile-damages
https://www.independent.co.uk/news/uk/crime/westminster-paedophile-ring-accuser-nick-charged-perverting-course-justice-fraud-chid-sexual-abuse-a8428781.html
https://www.wired.com/story/crying-pedophile-is-the-oldest-propaganda-trick-in-the-book/