It gets just a LITTLE heavier than that. Remember that the federal government has pursued prosecutions of civil rights violations thatr occurred as much as 40 years in the past. And this is the law NOW:
United States Code, U.S. Criminal Code,
Title 18, Part I, Chapter 13, Section 242:
§ 242. Deprivation of rights under color of law
Whoever, under color of any law, statute, ordinance, regulation, or custom, willfully subjects any person in any State, Territory, Commonwealth, Possession, or District to the deprivation of any rights, privileges, or immunities secured or protected by the Constitution or laws of the United States, or to different punishments, pains, or penalties, on account of such person being an alien, or by reason of his color, or race, than are prescribed for the punishment of citizens, shall be fined under this title or imprisoned not more than one year, or both; and if bodily injury results from the acts committed in violation of this section or if such acts include the use, attempted use, or threatened use of a dangerous weapon, explosives, or fire, shall be fined under this title or imprisoned not more than ten years, or both; and if death results from the acts committed in violation of this section or if such acts include kidnapping or an attempt to kidnap, aggravated sexual abuse, or an attempt to commit aggravated sexual abuse, or an attempt to kill, shall be fined under this title, or imprisoned for any term of years or for life, or both, or may be sentenced to death.
Dude, that only applies for deprivation of civil rights that are applied differently according to the above. It does not address and does not apply to the difference between armed and non-armed persons.