I really don't have a problem with most of the taxes except the manner in which one tax is executed. This would be those who are independent contractors. FICA tax is 15.3%. Normally, half of that is paid by the employer and the other half by the employee. As an independent contractor, you're stuck paying the full 15.3%.
I would like to see at least the Social Security (6.2%/12.4%) portion of FICA to be done away with so that we can make our own decisions of how to use the money. I guarantee you that I and most others would benefit more from depositing that 6.2% to an IRA that we do from Social Security. Not to mention, by the time people that are my age reach retirment age, Social Security is projecting that we will be receiving 26% less in payments than our current payees. I don't know much about Medicare (1.45/3.9%) so I can't really comment on that part. Overall, I think social security is a crock and we should have the freedom to build our own retirement funds that will actually benefit us in our old age.