Editor’s note: The following excerpt is abridged from Chapter One of The Tyranny of Opinion: Conformity and the Future of Liberalism by Russell Blackford (Bloomsbury Academic, October 18 2018, 240 pages).  I’m afraid. Like many people, I’m afraid to speak up and say exactly what I think. I’m afraid to contribute to public debate with total frankness. I’m more afraid of my allies than I am of opponents, since the latter can do me less harm (though if they’re so minded they can probably do enough!). I’m not afraid of my closest friends, the people who love me, who have my back and will keep my secrets, but it gets more frightening as soon as I step out into wider circles of colleagues and acquaintances. I come from a working-class family, and I grew up in an industrial city in Australia that was dominated at the time by its steelworks. I’m the first person from my family ever to attend university. I still have those connections, and I’ve inherited some blue-collar, trade-union values. But my social …