I think, a crowd means more than 12.
I remember having said that I find it inappropriate (to do a certain thing) in public, only to learn from my friend, that legally, "in public" means more than 50 people.
Which is funny because when my son who was young and dared by girls to expose himself got into trouble for doing it in front of four people. He told me about the incident, I had a talk with him about it, and I thought the case was closed only to be summoned by the principal to discuss it again. Those girls, the very same ones who dared my son, told on him. Lesson #1, lesson #2, .... but again to refute the principal's arguments about the difference between "in private" or "in public", my son said "But there were only four of us!"
One is always alone. Sometimes you pretend to fit. Sometimes nobody asks you what you think unless there is a point of decision how to act - if the crowd decides to burn witches alive, what do you do?
Again, using my poor son as an example. Now is Easter time, when bunnies chase chocolate eggs - I know it makes no sense, but that is how ideas degrade. I am a non-believer and I once made a mistake of giving my son too strong an explanation why I will never become a Christian. He took it the wrong way so far, but his views on religion will certainly evolve later. But now - alone in the crowd - the whole class ostracizes him for being a non-believer. All these nine-year-olds who don't understand religion if you ask them a single question, tell my son that he will burn in hell.
The wise person would not advertise the views that oppose those of the crowd, but my son is too little (immature) for that, too.
Blending in the crowd is easier and maybe wiser. Standing on your own is courting the disaster.