As the old saying goes: 'one swallow does not a summer make'.
While we are on the subject of racist attacks, let's have a look at some authenticated accounts of real racists. You may be especially interested in the ones shouting their praise of Hitler and killing of Jews.
The real fascists shout praise of Hitler and killing Jews:
http://www.youtube.com/watch?v=NgtRK3UDHRE&feature=related
Muslims beat up Christian minister
http://www.dailymail.co.uk/news/article-1162039/Minister-beaten-clashing-Muslims-TV-show.html
Man fights for life after gang stabbing
http://news.pinkpaper.com/NewsStory.aspx?id=380
Boy's fight to prove attack by Asian gang was racist
http://www.dailymail.co.uk/news/article-1152533/Boys-fight-prove-attack-Asian-gang-racist.html
12 June 2009: Asian gang attacks man
http://www.dewsburyreporter.co.uk/news/Gang-attacks-man.5357987.jp
In 2005: Warring street gangs unite to fight (Black against Asian)
http://www.sundaymercury.net/news/tm_objectid=16314958&method=full&siteid=50002&headline=rival-gangs-unite-to-fight-name_page.html
07 Nov 2001: Vicar pelted as Asians attack church
http://www.telegraph.co.uk/news/uknews/1361742/Vicar-pelted-as-Asians-attack-church.html
19 March 2008: Wife of vicar beaten for 'being a Christian' by Asian yobs speaks of shock at faith hate attack
http://www.dailymail.co.uk/news/article-535131/Wife-vicar-beaten-Christian-Asian-yobs-speaks-shock-faith-hate-attack.html