In a lot of countries around the world, it's a criminal offense to say the holocaust never happened.
 

Is it illegal to say that Christians were never fed to the lions?

Not really the same thing is it...? I mean where where were Christians being fed to lions by the millions by one nation within the last, say, 100 years? Name one nation :)

What about the Native Americans? US did kill way more indians.

Is it illegal for me to say that about the US and the native population? Where are the world wide native American museums?

The US is not one of those countries where it is a criminal offense to say that the Holocaust never happened.

I'm not seeing the connection.

American Indians were not exterminated, they died in the millions of diseases brought to America by European settlers for which they had no immunity to. They also died in wars, killing and getting killed. They got treated badly but they were not victims of genocide.

There is a holocaust memorial in Mexico City. MEXICO FUCKING CITY.
What the HELL does Mexico have to do with jewish oppression?

There were Mexicans in the camps.... World travel was possible even back then.. They had Mexican Pesos even in the monies robbed from people that were used to finance the war..

Killings of any human, nation etc is really bad and sad.