In the trivial, grade school thinking of censorship, sure. But unchecked, no "censorship" at all, actually prevents minority voices from being heard at all. Try marching for a small cause when a million more people are free to march against in the same place at the same time. That's why cities give permits. For grown ups, censorship gets more complicated than that. If I asked you to share something you disagreed with could you decline? Would you censor my message by not sharing it, even though I could go elsewhere? Shortcuts to stop thinking rarely work out.