I don't see how your point on 'murderers' is relevant at all - or are you stating that yes we have racists and therefore racism?
'...in fact we are the best'
If a football fan in the UK used language as per what we experience in rugby league and AFL they would be banned for life.
You can believe 'we are the best' - impossible to prove and very hard to justify. When did the indigenous get included in the census, get the vote? THAT IS RECENT HISTORY.