Mark Lavelle (32) was sentenced to seven years in prison with two suspended for the attack on Mr Cooper and the hijacking of a taxi.
Lavelle had taken crystal meth before the assault...Lawyers for Lavelle said he suffered from a mental disorder and had been with the State's psychiatric services since his mid-teens.
He has 62 previous convictions and a long history of substance abuse.
It is not just an angry aquaintance or drunk person at the pub who engages in violence. It is also people with mental disorders, extensive criminal records and long term drug use we need to consider in our awareness and self defence approach.
Such a combination in an attacker can often result in attackers with super aggression, strength and unpredictability.