Zahavasdad
Actually, since all of klal Yisroel accepted arvus (responsibility) for each other at Har Sinai, any aveira any Jew does brings down the rest of us. Unlike the non Jews we are 1 nation one family one soul, in Shomayim all of Klal Yisroel is considered one soul and we are responsible for each other. So if one Jew doesn’t keep Shabbos he brings down all Jews. On the same token when we do a Mitzvah we elevate all Jews. Its something to think about before doing an Aveira or Mitzvah.