Wiki is of course both-sidesing this:
The day has been controversial as the Legion was formally a unit of Nazi Germany and the remembrance day has been seen by Russia as an attempt to glorify Nazism.[3] Others point out that no one has ever been convicted of committing war crimes as a member of the Legion and hold that it was a purely military unit fighting against the Soviet Union that had occupied Latvia in 1940.[4][5]
https://en.wikipedia.org/wiki/Remembrance_Day_of_the_Latvian_Legionnaires
by the same logic, russia hasn't committed any war crimes in ukraine since no one has been convicted :cap-think:
On March 16, 2012 Efraim Zuroff during his visit to Riga to protest against the legionnaires' procession, stated in an interview to Latvian State television LTV1 that the "Latvian SS Legion was not involved in the crimes of the Holocaust" but also stated, as he has done every year since 1999, "although these units were not involved in crimes against humanity, many of their soldiers had previously served in the Latvian security police and had actively participated in the mass murder of civilians, primarily Jews".
Ah, so Jews aren't part of "humanity" i guess