Aries: Watches the fight and hopes they'll stop fighting...
Taurus: IGNORANCE.
Gemini: The only one who knows what's going on.
Cancer: Doesn't know if they should help or run away.
Leo: Is somehow the one who caused the fight.
Virgo: IGNORANCE.
Libra: Calls the cops.
Scorpio: Enjoying the fight.
Sagittarius: If their best friend is in the fight, they're gonna go batman mode and kill the other person. If not, they watch the fight. XD
Capricorn: IGNORANCE.
Aquarius: They probably know the people who are fighting (because they literally know EVERYONE), and they help out.
Pisces: DON'T FIGHT. OH GAWD.