Many of the protesters at UCLA and elsewhere have been hiding their identities. That's why they were wearing things like scarves and medical masks. Some of them say they're protecting themselves from being doxxed and protecting their future career opportunities. Lynn Greenky with Syracuse University is a 1st Amendment expert. She says protesters are exercising their freedom of association right.

<p>Many of the protesters at UCLA and elsewhere have been hiding their identities. That's why they were wearing things like scarves and medical masks. Some of them say they're protecting themselves from being doxxed and protecting their future career opportunities. Lynn Greenky with Syracuse University is a 1st Amendment expert. She says protesters are exercising their freedom of association right.</p>

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