I urgently need you to check these sentences on the Holocaust. Thank you.

1) 27 January was chosen as the date for Holocaust Memorial Day because it was on this date in 1945 that the largest Nazi killing(?) camp Auschwitz-Birkenau was liberated.
2) On this day our school encourages Holocaust remembrance by hosting a special exhibition with music performances, keynote speakers and visual displays.
3) I would like to take this opportunity to reaffirm our goals of mutual understanding and justice.
4) We must make sure that future generations understand the causes of the Holocaust and reflect upon its consequences.
5) We must remember the victims of Nazi persecution and of all genocides. We must condemn the evils of prejudice, discrimination and racism.
6) We must be confident about the human capacity for good in the face of evil.
However, we have to admit that humanity is still scarred by the belief that some people’s lives are worth less than others.

1) January 27 was chosen as the date for Holocaust Memorial Day because it was on this date in 1945 that Auschwitz-Birkenau, the largest Nazi concentration camp, was liberated.

(Make sure you don't start any sentence with a numeral. Sentences need to start with words.)

2) On this day, our school encourages Holocaust remembrance by hosting a special exhibition with musical performances, keynote speakers, and visual displays.

3) I would like to take this opportunity to reaffirm our goals of mutual understanding and justice.

4) We must make sure that future generations understand the causes of the Holocaust and reflect upon its consequences.

5) We must remember the victims of Nazi persecution and of all genocides. We must condemn the evils of prejudice, discrimination, and racism.

6) We must be confident about the human capacity for good in the face of evil.
However, we have to admit that humanity is still scarred by the belief that some people’s lives are worth less than others.

You want people only to understand, reflect/remember, condemn, and admit? Or do you want people to actually DO SOMETHING in light of all that horror?

This reminds me of all the cancer-awareness, diabetes-awareness, child-abuse-awareness, etc., campaigns out there. Is the goal simply to be aware of all these things? Or is the goal to take some kind of action?