Facebook co-founder Sean Parker has donated $100,000 to support Proposition 19, a California ballot measure that would legalize marijuana, reports the Associated Press. Parker’s contribution was reported in campaign finance filings that were made available this week. Another Facebook founder, Dustin Moskovitz, has donated $70,000 to Proposition 19, which includes $50,000 last month. Parker and Moskovitz no longer work at Facebook, although they retain ownership stakes in the social networking site.