Jesus wasn't interested in politics.  He was interested in people.  How do you get involved without politics? Easy- get involved without politics.  It isn't political to feed the homeless.  It isn't political to volunteer.  Jesus didn't speak out against the reigning Roman government or demand they feed the hungry people. No- He fed the people. He healed the people- and he asked his disciples to do the same.  He was the one who told Peter to put away his sword when the "government" came to take him away.  
Its great that churches are non-profit and tax exempt- it gives them more money to do more good.  Each person and church is still responsible to God to use that money as God would lead.  No one should ever give to a church for the tax benefit.  That isn't what it's all about.