No, it doesn't say that at all. You are probably thinking of the 15th Amendment, section 1 of which is "The right of citizens of the United States to vote shall not be denied or abridged by the United States or by any state on account of race, color, or previous condition of servitude."
> The idea that poll taxes or literacy tests or official intimidation while in transit to the polling places are somehow unconstitutional is and always has been... absolutely correct
Except, not; hence the prohibition of poll taxes by the 24th Amendment, and the prohibition of literacy tests for voting in some districts by the Voting Rights Act of 1965, later amended to apply to the whole country in 1970.
(Those things have, no doubt, always been wrong; they were not, however, unconstitutional, or even prohibited federally in any form, until much later than the 15th Amendment.)
While it may seem reasonable to require a proficiency test to legally own a gun, what you will see in practice is that any possible ambiguity in the legal definition for such a test will be exploited to serve the political preference of the tester.
~The 14th Amendment just says that blacks have equal rights to vote as whites. The idea that poll taxes or literacy tests or official intimidation while in transit to the polling places are somehow unconstitutional is and always has been... absolutely correct.~
In some counties, bearing a concealed firearm requires a permit issued by the sheriff. In some counties, the sheriffs do not issue any permits. In others, the sheriffs issue fewer permits to black people than the local demographic statistics would otherwise suggest.
Do you understand now why such subtle and apparently reasonable encroachments upon a right must be scrutinized so very closely?