I can't begin to imagine anyone harrassing you on the fourth unless you were openly expressing an anti-American sentiment! Even then, you would probably just be ignored. Consider yourself an honorary citizen for the day and jump into the fun. Have a picnic, go to a parade, take in a fireworks show, have a nice time!!! Remember that nearly all Americans descended from somewhere else and we are, on the whole, a very accepting people. Also, the British tend to have a longer "historical" memory than we do. As another person stated, in celebrating we really only equate our Independence Day with the birth of our country. King George is long dead.