He's a pretty clear racist.
As for mental illness, I would want to wait. I don't buy that mass murderers are always mentally ill or even most of the time. People like to use the refrain, Well, it can't be mentally healthy to be planning/carrying out mass murder, but I'd like to see them crack open the DSM or the mental and behavioural disorders section of the ICD and point out a specific mental disorder that they could diagnose with confidence, even an NOS or otherwise unspecified diagnosis, and could know that most clinicians would back them up.
Someone implied on here that the Boston Maraton Bomber (who lived) was actually insane, but the laws on insanity on his case should have been ignored (read: nullified, as in jury nullification) and the death penalty imposed anyway. It took all of a few minutes to look up the case and see that things like mental illness and mental health therapy weren't even mentioned at all, much less an insanity plea entered.
Sometimes, people are just terroristic jerks.
Of course, how will things be in this case with regards to mental illness? We'll have to see.
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"You have a responsibility to consider all sides of a problem and a responsibility to make a judgment and a responsibility to care for all involved." --Ian Danskin