No outrage.
The blacks have Jesse Jackson, and Al Sharpton, and the New Black Panthers, because those named are rabble rousers and getting people all steamed up at 'the white man' because some hispanic guy shot a black guy is their bread and butter. They know that King Shmir Shabazz will likely be shaking his baseball bat at wite voters in Philly and are ready with charges of racism for anyone who calls it reverse discrimination.
The Muslims have Rep. Ellison, and CAIR, and the North American Islamic Alliance and a dozen OTHER Muslim Brotherhood front groups because they are rabble rousers and hate merchants and know they will be villified and they want the defenses ready to respond to anyone calling the kettle black with charges of "Islamophobia".
The Sikhs are peaceful folks who practice their religeon in peace, and simply want to be lefct alone. How do I know this? they don't have Al Sharptons, jesse Jacksons , CAIR's, NAIA's all in place to be overcome with righteous indignation at the drop of a hat! hence, no 'outrage'.
The REAL tragedy, is some dumba$$ thought he wanted to kill him some 'ragheads, no doubt in revenge for 9/11 and a dozen other 'provocations', and had no forking clue that there's more than one flavor of 'raghead'. The nice Tightly wound turbans of the Sikhs are rather distinctive. The Sikhs probably dislike Muslims more than you or I, Muslims think that as non-Muslims christians and Jews should live in subjugation to the globakl caliphate and pay the 'jizyah' (poll tax for the right to be allowed to live as second class citizens in a Muslim society) BUT if you are a Deist (sp?), an Animist, or a pagan (read Sikh, Hindu, Taoist, Buddhist, Shinto, Wiccan, or 'other') You should simply be put to death. so behind closed doors, Muslims were probably having a good time thinking that this loser who probably thought he was striking at them, was actually achieving their purpose.
This dear children, is what is referred to as irony.