Google co-founder Sergey Brin increases his total contribution to $45M for the Building a Better California Super PAC that opposes a proposed 5% billionaire tax (Dara Kerr/The Guardian)

Google co-founder Sergey Brin increases his total contribution to $45M for the Building a Better California Super PAC that opposes a proposed 5% billionaire tax (Dara Kerr/The Guardian) - Tech Sentiments