Any minute now a labour centrist type will be along to tell us that criticising Mandelson for his friendship with Epstein and all that implies is not pragmatic and is in fact unreasonable purity politics.
I think there's a balance, in that if everybody suppressed that speech and refused to take that risk of criticising then those corrupt and powerful state actors would be unchallenged.
They can then become even more powerful and may continue to encroach into private life and speech. While it may be necessary to defend yourself on the one hand, hiding entirely may also present additional dangers.
A good way is to find a meetup group with some shared interest. It doesn't really matter what so long as the crowd is good and you know enough to hold a conversation in the subject.