If you doubt this is true, I challenge you to open this link and read this Supreme Court ruling. I warn you, it is shocking. Link here: https://cite.case.law/cal/4/399/

People v. Hall, 4 Cal. 399 (1854)

Oct. 1854 · Supreme Court of California

4 Cal. 399

THE PEOPLE v. GEORGE W. HALL

For those who want a summary:

THE PEOPLE, Respondent, v. GEORGE W. HALL, Appellant.Cal. 1854.

**1 *399 Section 394 of the Civil Practice Act provides, “No Indian or Negro shall be allowed to testify as a witness in any action in which a White person is a party.”

Section 14 of the Criminal Act provides, “No Black, or Mulatto person, or Indian shall be allowed to give evidence in favor of, or against a White man.”

Held, that the words, Indian, Negro, Black and White, are generic terms, designating race. That, therefore, Chinese and all other people not white, are included in the prohibition from being witnesses against Whites . . .

The appellant, a free white citizen of this State, was convicted of murder upon the testimony of Chinese witnesses . . .

[Chinese are] a race of people whom nature has marked as inferior, and who are incapable of progress or intellectual development beyond a certain point, as their history has shown; differing in language, opinions, color, and physical conformation; between whom and ourselves nature has placed an impassable difference . . .

For these reasons, we are of opinion that the testimony was inadmissible.

Thanks to this ruling a murderer was set free.

165 years later, Americans are still coping with the consequences of this ruling. https://cite.case.law/cal-4th/60/1169/