I don't think out right lie but lie of omission. As in people will often stay silent if they have an idea that isn't mainstream and they know or think it will not be well received by the people around them. Thats why I'm starting to really love old people, they just let their opinions fly and to hell with what others think. I think when you have an "extreme" opinion you should feel comfortable voicing it as long as you can do so in a respectful way. But I would also advice knowing your audience, some are more ready to listen and hear you out than others.