What other groups of people were killed or persecuted by the Nazis besides Jews? Were they kept in concentration camps as well? How many were killed?

Here we go:

*Rroma and Sinti (Gypsies)
*Poles and other Slavs
*Political Dissidents and Dissenting Clergy
*Persons with Physical or Mental Disabilities
*Jehovah's Witnesses
*Homosexuals
*Asocials (vagrants, prostitutes, alcoholics, and others who were considered unfit for society)

Numbers are hard to ascertain because of many factors. The Gypsies, for example, actually had over 1.5 million killed but, due to poor record keeping, most are forgotten. Most of us did not write, the vast most part of us, and were recorded with nothing but a checkmark or an "x" or... nothing.

I have not found any "hard" numbers listed for other than the Jews which, I believe, is underestimated as well. We have NO clue how many of our people were killed.

Hence, I am not citing numbers other than to state that the Gypsies were vastly underestimated.

The Jews and Gypsies were targeted under the Final Solution, the others for undesirable behaviour or beliefs or being unfit for life (the physically and mentally disabled). I have found no reason other than genetic undesirability for Slavs to be on the list but, for some reason, they were not part of the Final Solution.

If you think about that list, anyone could be shoved into it. Anyone the Reich did not like could be pigeonholed into one of those categories.

It was very common for a free thinker or scientist/researcher/ doctor who held a different opinion from Hitler and his henchmen to be shoved into one of those groups and exterminated in the camps.

Other groups persecuted and killed by the Germans include Gypsies, homosexuals, communists, trade unionists, the handicapped and mentally disabled, Jehovah's Witnesses, Poles, Soviet POWs, and political dissidents. They were also kept in concentration camps. The current symbol for the gay rights movement, a pink triangle, is from the badge that homosexuals wore in the camps, like the Jews wore yellow Stars of David.

Current estimates for non-Jews killed are roughly:

2.5 – 3.5 million non-Jewish Poles
3.5 – 6 million other Slavic civilians
2.5 – 4 million Soviet POWs
1 – 1.5 million political dissidents
200 000 – 800 000 Roma & Sinti
200 000 – 300 000 handicapped
10 000 – 25 000 homosexuals
2 000 Jehovah's Witnesses

The above figures are from the Wikipedia.

the Jehovah's Witnesses are the only religion that was persecuted and singled out by the nazi regime. they were considered a plague of vermin that would be exterminated. each Jehovah's witness was a german national and otherwise should have been considered of the master race. however, the Jehovah's witnesses refused to salute hitler as their fuhrer. Jehovah's witnesses earthwide consider only one fuhrer (savior) to be JesusChrist. the total amount of witnesses executed in germany were not 2000 but 20,000. unlike the rest the only reason for ending up in the concentration camps was for taking a neutral stand, and refusing to participate in the murder of their fellow human beings from other countries. if we all believed like such, what would happen to wars?

The Nazis killed anybody who was suspicious to them.
Even people who grumbled against the system were sent to concentration camps.
In an action shortly after overtaking the rule especially some then thousand "Grumblers" were arrested and they were arresting those grumblers as much as possible at work or in the public so that everybody could see what happens to those who are aginst the system.

You forgot about that 150.000 German soldiers who were executed by military courts.
Often only a negligent remark could lead to a capital punishment.
And not to forget those 300.000 German soldiers who came losing all their ranks into punishment battalions and who had usually to fight at the most dangerous places without weapons and cleaning mine-fields with their bare hands.

Gypsies
Slavs
Political opponents
Disable people
Black people
Quakers
Jehovah's witnesses
Homosexuals
Those who didnt fit into society, prostitutes etc.
People who openly oppossed the Nazis
People who helped those being persecuted.
Children of alcoholics were sterilised as it was believed that alcoholism could be passed on genetically.