Violent Celtic fans, some masked in IRA-style balaclava's, in altercation with Police outside Celtic Park before last night's Scottish Cup tie against Airdrie.
— Vanguard Bears (@VanguardBears) January 20, 2019
A prelude to the violence perpetrated on innocent Airdrie fans - including women and young children - after the match. pic.twitter.com/XGKRnjWLPp