Americans view race relations as being worse than at any point in the last 20 years, according to a new Wall Street Journal/NBC News poll. This much isn't really a big surprise; other polls have shown similar trends, and the deaths of Michael Brown, Eric Garner, Freddie Gray and other black men killed by police since the summer of 2014 are often cited as the logical causes.

But take a look at the new numbers, and one trendline stands out a little bit more than others. Blacks and whites have turned pessimistic at about the same clip. But Hispanics, who in recent years have been the least likely to view race relations as "bad," just became significantly more pessimistic.

The percentage of Hispanics who view race relations as either "fairly bad" or "very bad" jumped 16 points over the last year, versus seven points apiece for black and whites Americans.

Now, this could simply be statistical noise -- Hispanics historically have viewed race relations slightly more positively than blacks, and that remains the case today -- but it's also quite possible that what has turned into a pretty testy debate over immigration could be registering here. The sample size in the new poll (110 Hispanics) means there's a big margin of error, but the 16-point jump is statistically significant.

It's hard to say with certainty without more data. Polls on race relations tend to ask specifically about relations between blacks and whites and not generally, as the NBC/WSJ poll does. These polls also tend to compare how blacks and whites view this issue, neglecting to mention Hispanics.

But let's not forget that the Republican front-runner, Donald Trump, has taken a very hard-line immigration stance that includes deporting every illegal immigrant. He also began his campaign by saying many illegal immigrants from Mexico are rapists and other forms of criminals. And Hispanics have been paying attention; as many as 8 in 10 disapprove of him in recent polls, while only about 1 in 10 approve.

Other Republicans have been talking tough too, including a back and forth at Tuesday's GOP presidential debate in which Sens. Ted Cruz (R-Tex.) and Marco Rubio (R-Fla.) both attempted to move away from past support for legalizing or giving a path to citizenship to undocumented immigrants.

That debate happened after the poll was completed, but it's symptomatic of a Republican primary debate that has tacked to the right and focused much more heavily than expected on matters like deportation and border walls -- all thanks to Donald Trump.