The statement is well put. It is differentiating between the behavior and the person.

Doing some quick reading comprehension stuff:

- The demeaning, insulting and ridiculing BEHAVIOR has no place.

- I reject the POLITICS of Donald Trump

- shield our community from this MOVEMENT (i.e. the aforementioned politics)

He clearly laid out values of Mr. Trump then proceeds to explain how espousing them would result in a bad fit for his company.

More specifically, here's what cannot be derived from his email:

- "If you VOTED for Trump you're fired." As hard as it is for me to understand, I do realize one may have other reasons why he/she voted for Trump.

- "If you support Trump, you're fired." This one is murky but one may support some of his actions while rejecting others.