Deah: I see what you're saying, but it often seems to me that the liberal view of patriotism is "If it isn't in the Constitution, ignore the Constitution and do it anyway."
That's how we got the huge government we have today, compared to the small government we had before World War II. There is no constitutional authority for much of this, and many of the New Deal programs were turned down by the Supreme Court for that reason. Then Franklin Roosevelt threatened to pack the Supreme Court, and it reversed itself on the Constitution, and so we have Social Security and Medicare and Medicaid and a host of other neo-socialist and welfare state practices that simply aren't authorized as powers given to the U.S. government in the Constitution. I'm not saying these practices are wrong, or bad for the country, or immoral, or anything else negative about them. I am saying that they aren't authorized by any language I can find in the Constitution, and that the liberals who supported them should have passed Constitutional amendments granting the government those powers.
That isn't a statement that the government we have is "good enough." It is a statement that a strong and flexible system devised for organizing and maintaining a national government has been ignored for 70 years -- and the movement and the party that had the power during most of that period was the same movement that is now described as "liberal" and was once described as "populist." It may intend to be patriotic, but when it ignores in its practices the very Constitution you say is a gift to the world, it doesn't come off as very patriotic.