Just a side note: When Moshiach comes, is someone going to be chupadik enough to stand up and ask, "Hey! Are you frum from birth? Where did your parents come from? We need to know before we follow you!" Of course our Righteous Moshiach will have to be from the lineage of King David. Hashem is waiting on US to get our acts together....baseless hatred destroyed our 2nd Beis Hamikdash....only PURE LOVE/AHAVAS YISRAEL will bring Moshiach and rebuild our 3rd Beis Hamikdash!
The point is, when and where will this judgement upon our brothers and sisters end? The world is going crazy right before our eyes and we are worried about lineage? Have WE gone completely crazy? Do we stop and think to remember what the Torah and our sages of blessed memory say about Baal Tshuva and Converts? Did we forget that? Or maybe, we don't want to remember it....then we would be held accountable for our actions and words towards them! How did the Lubavitcher Rebbe treat others? Jews and non-Jews....we would do well to emulate him! Always a kind word and a smile to everyone he met....he didn't care about blood-lines....he loved people for who they were....nothing more...nothing less. Pure love! Remember: We have a Father/Tatta above who made the whole world...Jews and non-Jews....and He loves EVERYONE.....shouldn't we?