From Wikipedia: "Collective identity is the shared sense of belonging to a group."

I guess some nights for some people who aren't part of a group can be very lonely.

I get the point about belonging but your comment reeks of dehumanization.

Join us or else....

That kind of attitude creates and/or enforces much of the negativity in this world such as the actions of cops alleged by Ian Murdock.

That statement was about collective identity. Everyone has a collective identity.

You are free to choose your own collective identity. Do whatever you want. If you say that you are not part of any collective identity, I'm not sure about that...

I try very hard to avoid any collective identity for myself, even to the extent where a lot of people would say "I am a [verb]er," I consciously prefer "I [verb]."

The collective identity mindset opens people up to manipulation, guilt by association, and undeserved praise by association (which sounds nice but can lead to poor decisions based on a distorted sense of self). Any benefits are comparatively small. You can still go [verb] with the [verb]ers without merging your identity and worldview with theirs.

There should be a Russel point just like there is a Godwin point.

It's only right to balance the availability of internet adage. Might as well call it Russell's Law.