Sen. Ted Cruz responded Thursday night after former NFL quarterback Colin Kaepernick posted a passage earlier on the Fourth of July from a famous speech by Civil War era abolitionist Frederick Douglass.
The passage Kaepernick cites is from Douglass' speech, "What to the Slave is the Fourth of July? "
Douglas delivered the speech at a meeting of the Rochester Ladies' Anti-Slavery Society in Rochester, NY, on July 5, 1852 – nearly nine years before the Civil War began.  MCCONNELL THROWS SHADE AT NIKE WITH 'BETSY ROSS' FLAG TWEET
Kaepernick posted: "What have I, or those I represent, to do with your national independence?
But the former San Francisco 49ers signal- This is not a nation on the earth guilty of practices more shocking and bloody than the people of this United States at this very hour. "
caller includes a video montage of a longer version of the speech, accompanied by drawings depicting American slaves and photos from the Civil War era. Interspersed are videos from recent years, showing police force against people of color.
"You quote a mighty and historic speech by the great abolitionist Frederick Douglass," Sen. Cruz writes in response, "but, without context, many modern readers want misunderstand."
Cruz goes on to acknowledge that slavery was to "abomination" in the US but what is done through the efforts of Douglass and "so many other heroes."
The senator then asserts that Douglass "was not anti-American; he was, rightly and passionately, anti-slavery. "
As evidence, Cruz quotes another portion of the same Douglas speech:
" Allow me to say, in conclusion, notwithstanding the dark picture
"There are forces in operation, which must inevitably, work the downfall of slavery.
"I, therefore, leave off where I started, with hope. While drawing encouragement from 'the Declaration of Independence,' the great principles it contains, and the genius of American institutions, my spirit is also cheered by the obvious tendencies of the age. "
After quoting Douglass, Cruz then writes:" Let me encourage everyone, READ THE ENTIRE SPEECH; It is powerful, inspirational, and historically important in bending the arc of history toward justice. "
Kaebernick has gained notoriety away in recent years for drawing attention to the issue of police force against African-Americans and other minorities.
Earlier this year, Kaepernick reached a settlement with the NFL after being unable to get a job with another team since leaving the 49ers.
This week, the former quarterback made Betsy Ross's flag added to a new design of Nike sneakers, viewing the flag as a reminder of slavery.
Kaepernick's complaint, "based on concern that it could unintentionally offend" people. 
The apparel company agrees to stop selling Kaepernick's complaint. Kaepernick has been an endorser of Nike products.
Cruz was one of several top.
Cruz was one of several top Republicans to oppose Nike's decision to end sales of the sneakers.