Most protesters use masks to cover their faces for several reasons:

1. Anonymity: To conceal their identity and avoid recognition by authorities, surveillance cameras, or opposing groups.

2. Protection: To shield themselves from tear gas, pepper spray, or other crowd control measures.

3. Symbolism: To represent a unified front, solidarity, or affiliation with a particular group or cause.

4. Fear of retribution: To avoid retaliation or punishment from authorities, employers, or others for participating in protests.

5. Privacy: To maintain personal privacy and avoid being identified on social media or in public.

6. Security: To protect themselves from potential violence or harassment.