Not news: "Trump supporters are racist." News: Now with scientific evidence

[Andrew]

. . . statistical significance is generally accepted at the 5% level. This means that if 30 out of 100 trump supporters were for housing assistance with the white dude, then 25 out of 100 were supportive with the black dude.

That is not at all what a 5% significance level means.

Without going into too much detail, it means there is a 5% or less probability that the difference in the results is due to chance (that is, at least a 95% chance that the difference is real).