First, a disclaimer: I do not hate President Bush.
Having said that, I think a lot of "grass roots people" see Bush as doing more to strengthen, centralize and empower government than he is doing to spread "freedom and democracy".
If "grass roots" people live to see a day when America has finally won the War on Terrorism, history teaches that all these government agencies being created and granted far-reaching powers will act like government agencies always have and not dissolve or roll themselves back to pre-war levels. Instead, they will continue to grow and exercise more of the powers they were given when a supposedly "clear and present" danger existed.
Tax Freedom Day in America is now around the first week in June; that means "grass roots" people work to pay the costs of government up until that day, and only afterward do they start working for themselves, their families and their communities. Some quick mental math proves that "grass roots" people now give 50 percent of the fruits of their labor to government.
If a warlord or communist dictator kicked in your door and looted half of everything in your house, and you had no power to get it back because the warlord or dictator had more guns, jails and friendly judges than you did, that would be slavery. So when America congratulates itself for bringing "freedom" to other parts of the world, while stealing half the productivity of its own people, I can see how others would accuse us of hypocrisy.
Also, democracy when stripped of its flowery connotations means mob rule. Man "grass roots" people grew up pledging (and still do at public, sports events) allegiance to a republic, not a democracy. Many "grass roots" people find themselves subjected more and more on a daily basis to the open hostility and intolerance (what's the word? discrimination!) of strangers who are from different racial, ethnic and religious groups than theirs.
President Bush seems to believe -- through open borders, amnesty and out-sourcing of jobs -- in bringing about a country that resembles the one described, so the president would seem to be championing a policy that will eventually result in the destruction of "grass roots" people. Since most humans do not wish for their own annihilation, I can see how some "grass roots people" would think Bush their enemy, even though he is the Commander-In-Chief.
If a "grass roots" person came up to me and said "I hate Bush!", those are some thoughts that might be going through his head.