https://twitter.com/jason_paladino/status/126639991697850777...
You can be reasonably sure it is collecting facial biometrics and perhaps IMEIs.
https://www.vice.com/en_us/article/5dzbe3/customs-and-border...
That Wikipedia article has a lot of detail in it that explains things well beyond what I could within an HN comment, but I think one example is "separate but equal" which was anything but equal.
Note, that Jim Crow was enacted not immediately after the Civil War but after the reconstruction period[3]. The aftermath of reconstruction involved a period of racist terror where the Ku Klux Klan and other forces effectively engaged in a guerilla campaign that restored white supremacy in the South.
[1] https://en.wikipedia.org/wiki/Jim_Crow_laws
Grandfather voting clauses: https://www.thoughtco.com/grandfather-clauses-voting-rights-...
Felony disfranchisement: https://en.wikipedia.org/wiki/Felony_disenfranchisement_in_t...
Related to felony disfranchisement, the war on drugs: https://en.wikipedia.org/wiki/Race_and_the_war_on_drugs
Gun control laws: https://newrepublic.com/article/112322/gun-control-racist
Literacy tests: https://en.wikipedia.org/wiki/Literacy_test#Voting
Cash bail: https://harvardlawreview.org/2018/02/bail-reform-and-risk-as...
Stop and frisk: https://en.wikipedia.org/wiki/Stop-and-frisk_in_New_York_Cit...
Some of these fall under the broader category of Jim Crow Laws[1], but most the original Jim Crow Laws are more obvious in their racism.
https://en.wikipedia.org/wiki/2018_Florida_Amendment_4
and republicans are still trying to subvert it by sneaking in restitution as a prerequisite. it was challenged in the courts, overturned, and now appealed
https://www.npr.org/2020/04/27/844297011/voting-rights-for-h...
check out this tweet
https://twitter.com/mrddmia/status/1264687609995026437
Edit: what exactly am I getting downvoted for? Did I post something that wasn't factually correct? Did I use foul language? Did I antagonize?
Many of these laws existed before the Civil War, and were simply "updated" to replace the word "slave" with "freedman".
Other laws cleverly redefined common terms, introducing technical language, so that they could claim that a former slave, forced to work for little or no pay, was "serving an apprenticeship" or "being punished for vagrancy". E.g., a slave in reality, but "on paper" an apprentice, a volunteer, serving a criminal sentence, etc.
Black Codes also severely limited the ability of black citizens to gather and organize, required impossible "literacy tests" to vote, and prevented black citizens from owning any type of weapon, either outright:
Louisiana: "No freedman shall be allowed to carry firearms, or any kind of weapons."
Or via a "may issue" licensing scheme:
Alabama: "Freedmen must not carry knives or firearms unless they were licensed so to do."
[1] https://en.wikipedia.org/wiki/Black_Codes_(United_States)
https://twitter.com/rexchapman/status/1266146369905070080?s=...
"The document, consisting of 14 sections divided into bullet points, had a section on "rules of war" that stated "make an offer of peace before declaring war", which within stated that the enemy must "surrender on terms" of no abortions, no same-sex marriage, no communism and "must obey Biblical law", then continued: "If they do not yield — kill all males"." [0]
[0] https://en.wikipedia.org/wiki/Matt_Shea#%22Biblical_Basis_fo...