It doesn't really matter if the woman involved is an avid Trump supporter. That isn't really what the cause for concern is surrounding the demonization of immigrants and Hispanics. The issue is that you are creating fear and hatred within the people who continually hear this rhetoric: that these people are criminals, that they are destroying this country, that they don't belong.
It isn't only the ones who stand at Trump rallies who fall victim to this, it is often those who aren't actively involved in politics, who simply hear this rhetoric and don't have that political frame of reference to delve into the truth behind it.
Of course that isn't to say that we have any information that this is certainly due to any Trump effect, however, would it really be so farfetched? Are we really so naive to believe that the most powerful man in the country constantly telling the people how so many of society's ills are caused by immigrants and hispanics, would have no effect over the actions of the populace? The effect of these words is breeding fear and hatred, two very strong catalysts for violence.
I find it somewhat disheartening that, after an action like this, instead of falling to questioning the effect of such rhetoric that the attacker was echoing, we are instead pointing at the race of the attacker and trying to brush it off. That isn't simply pulling the carpet over our own eyes, it is blinding ourselves with the same prejudice we are denying...