I haven't read the wiki article on the Tea Partiers, but... it's wiki. Take it with a salt-shaker of salt. I've been to multiple Tea Parties and, while people are plenty passionate, everyone's always been extremely pleasant.

I just don't get how it's a bad thing to give uninsured people insurance.

It's the 'give' part I have a problem with. I don't want the government to 'give' me stuff... I want them to get out of the way so I can live my life, do my job, make money and provide for myself.