1. There are several respectable sources about the deportation of the Jews, for instance this report or this book.It is also mentioned here. Or you could read this article: the author is a Russian Jew. http://eja.pri.ee/history/Weiss-Wendt_rus.pdf 2. Basically what Traitorfish said. As for them being "Nazi collaborators"... well that would have been weird accusation for Jews. Not to mention that particular wave of deportations took place before Germans even arrived here. 3. "Most" is the most precise I've heard, and some lists of the perished. These are in Estonian, unfortunately. But yes, there were survivors as well. I have not been present myself, but from local forums and web commentaries, I have gathered that number of Russian people have participated. Yet others said they went to protest against "Nazi parade" but admitted they found neither parade nor Nazis.