When truth has been banished and replaced with lies, then lies dominate and truth is thrown into the garbage can (as we can see daily in the politicians and mass media today). This young woman was attacked because she supports Trump.
Refusing to wear a hijab was the right thing to do. In fact, those who want to wear their hijabs should stay in their own countries, not come to other countries to impose their ideas on others. Had the Western governments had even a sliver of understanding about Muslims and Islam, they would have asked the hijab-wearers to stay home.
As to black-on-black violence (whether cops or civilians) that is an established fact (sad to say). What is not being condemned today is Black Racism against whites, Orientals, and others. That is completely unacceptable, just as white racism was unacceptable. Did anyone call Obama a Black Racist publicly? That was the truth and his record showed it. But everyone FALSELY accuses Trump of being a racist and white supremacist, when that is absolute nonsense.
The cancer of Left-Liberalism has led to the rot in the West, and will eventually lead to its demise.