first of all no intelligent person says obamas a communist, they say hes a socialist. which is where he wants to take the country. Hes pro taking from the rich and helping the poor. While this sounds like a nice idea, it can have detrimental consequences on the economy. His obamacare HURTS small business owners by forcing them to pay more for their employees, thus making it harder for them to A) be successful and B) create jobs which is exactly what economies need to thrive.
Its simple really, Obama wants to relieve peoples short-term struggles by giving them what they need for free. However long-term this will hurt the country because we wont be able to maintain these social programs. It already is hurting us were 16 Trillion in debt. We simply cant afford all these welfare programs. As much as i would love to ask the government to support yeshivas and kollels, we cant afford it.
And thats not even getting to the moral problem of forcing the wealthy class to pay for benefits that wont go to them.