I would acquaint both accused Deniers and all Others with some photographic evidence.

[Linked Image from i2.wp.com]

[Linked Image from i.pinimg.com]

[Linked Image from upload.wikimedia.org]

[Linked Image from s3.amazonaws.com]

FTR, the above photographs are of prisoners liberated from Andersonville after the American Civil War.

Andersonville National Historic Site
https://goo.gl/maps/DcEWPAfZXacqxDsd9
https://www.nps.gov/ande/index.htm

It seems prisoners of regimes on the losing side of wars tend to do poorly.

OTOH, in addition to Andersonville, I have also toured the site of the Union prison for Confederate POWs at Rock Island, Illinois. The numbers (and proportions) of folks who died from typhus(1)(2), both guards and prisoners, was horrifying, as both documentary evidence and the number of tombstones attest.

Epidemic disease in crowded & malnourished populations generally cause many multiples of death relative to violent action(3). Post-WWII, the West has managed to attenuate such epidemic disease in confined populations, but I fear this is merely an interregnum, as anti-biotic-resistant bacteria seems set to render antibiotics moot.

******

(1)
Originally Posted by https://en.wikipedia.org/wiki/Typhus
Typhus, also known as typhus fever, is a group of infectious diseases that include epidemic typhus, scrub typhus, and murine typhus.[1] Common symptoms include fever, headache, and a rash.[1] Typically these begin one to two weeks after exposure.[2]
The diseases are caused by specific types of bacterial infection.[1] Epidemic typhus is due to Rickettsia prowazekii spread by body lice, scrub typhus is due to Orientia tsutsugamushi spread by chiggers, and murine typhus is due to Rickettsia typhi spread by fleas.[1]
Currently no vaccine is commercially available.[3][4][5] Prevention is by reducing exposure to the organisms that spread the disease.[3][4][5] Treatment is with the antibiotic doxycycline.[2] Epidemic typhus generally occurs in outbreaks when poor sanitary conditions and crowding are present.


(2) Anne Frank died of typhus, too. Not in a gas chamber or by bullet, bayonet, or artillery shell.

(3)
Originally Posted by http://civil-war-disease.leadr.msu.edu/statistics-2/
While it may be assumed that most causes of morality during the Civil War were due to battlefield injuries, it is statistically proven that disease was the number one killer during this time. According to “The Impact of Disease on the Civil War” by Intisar K Hamidullah, 3/5 Union troops died of diseases. 63% of Union fatalities were due to disease, 12% due to wounds, 19% of Union deaths were due to death on the battle field. Likewise, 2/3 Confederate troops died of infection...

It was found that between May 1st 1861-June 30th 1866, federal armies reported about 6,455,000 casualties, but more than 6 million of those incidents were for bouts with diseases. More than 157,000 Northern troops died from disease, compared to 38,115 death from battle or non-battle injury...

Out of the seven mentioned diseases, diarrhea was the greatest killer, which eluded approximately 20% of all deaths caused by disease, followed by 14% of the deaths for pneumonia and 13% for typhoid. It was also found in the article by Hamidullah that 60,000 soldiers died from diarrhea or dysentery in both the Union and Confederate armies.



Addendum:

I really don't expect folk to read end notes or follow links (or even register photographic data), as that would challenge beliefs derived via non-empirical means. But, as stated by George Orwell, "We have now sunk to a depth at which re-statement of the obvious is the first duty of intelligent men." My duty done, I urge one and all to recommence with the duel to the death insult/accusation with Ockham's Butterknives.

Regards,

deadlift_dude
“The very first essential for success is a perpetually constant and regular employment of violence.”
----Fred Rogers