Well saidI think that you are ignoring both the action and the outcome and playing a semantic game around the word 'kick'.
The action I see is Silicy raising his foot and gently touch McGrath's leg with the top of it. I don't think it constitutes a 'kick' in any meaningful way, but for want of another word, others do. Once it is labelled a kick this is extrapolated into arguments about kicking someone being an act of violence that needs to be stamped out. Therefore Sicily needs to be punished. The argument has become completely divorced from the actual action that was clearly non-violent and harmless.