What about outside of Twitter? Doesn't his comments on Curiel, the Central Park 5, discrimination settlements and other reports that all are racially tinged matter? Doesn't it contribute to the context?
No. I look at individual comments and incidents on their own. For example, Joe Biden's "clean and articulate" comment about Obama had racial overtones to it and frankly had a stronger case for being racist. Remember the quote. "I mean, you got the first mainstream African-American who is articulate and bright and clean and a nice-looking guy. I mean, that's a storybook, man."
Unlike Trump, he referred specifically to race and implied that previous black candidates were unintelligible, dumb, dirty, and ugly. Does that mean every comment he has made that his political opponents deemed racist were actually racist? No.
It is a death sentence which is why conservatives are performing their best mental gymnastics to avoid the rightly earned label. Keep in mind that I was resistant to call him racist until this moment. This comment combined with the aforementioned context is simply too much to ignore.
I find it ironic that a comment that made no reference to race or ethnicity and was directed at people who are Trump's biggest political enemies and most vitriolic critics is your "klan robe found in the closet" moment. He has said worse in the past, and of course, some of the people he attacked have said worse.
Why is racism a synonym for xenophobia?
Because we're rhetorically sloppy and because the word "racist" has more political impact, though it has less than it used to have because it's so wildly overused.
Respectfully, your attempt to isolate this comment from all other evidence is also a self-serving interpretation. The fact that a typically "pretty fair" person can come to the conclusion you have speaks to how much more conservatives care about their ideology than the office of the POTUS and sadly the country.
In what way am I served by not calling the comment racist? This is a guy I criticize regularly (last did so two days ago) and whose comments I have called racist before. It would be no skin off my nose to call it racist if I genuinely thought it so.
But I think you should step back a little and think about this one again. Don't you wonder why screaming "racism" every five minutes does very little to Trump's approval ratings even though that sort of thing has hurt other politicians in the past? You can write it off to Republican partisanship, but he does better among minorities than far more racially sensitive Republicans have. How do we explain that? Furthermore, polls suggest that white liberals are more racially liberal than racial minorities are. Think about that. The actual people who are the victims of all this alleged racism are less politically correct and less woke than you educated white guys in the cities are. Doesn't that make you wonder at least a little if maybe this kind of thing is going too far and is a bit exaggerated?