A wonderful petition has been started by an Australian league fan, calling on the NRL to ban any player found guilty of domestic violence for a season. You can sign it here. There are excellent reasons for this petition to be signed, not least because rugby league as a sport has a long history of off-field assualts, rapes and violence. There are of course players who conduct themselves well off the field, however those who commit violent offences should absolutely be singled out and punished.
Let us face facts, professional rugby league players are massive, aggressive young men. Their job is to attempt to run a ball through a line of 13 other massive aggressive young men, using pretty much any means necessary. There must be systems in place to show them that that sort of behaviour is completely unacceptable off the field, against anyone. Of course, there are those that argue that sports like league and rugby are breeding grounds for monsters, but I don't subscribe to that view. In general, rugby league players do not assault or rape. Those that do should not be welcome back on the field.
I would suggest that this petition be widened to include all sports, not just the NRL. Why ban sportspeople for smoking a joint when they don't get banned for a real crime?