It can be safe to say that almost everyone across the globe knows and recognizes the American flag. It is after all the symbol of one of the powerful nations in the world today. It denotes unity, freedom and liberty, which are the ideals of Americans. The flag is called by many different names; like the red, white and blue, the old glory and the stars and stripes in a loving way. People are quite attached to this symbol of American patriotism, unity and liberty.
It is due to this very sentimental and emotional attachment to the flag, many people do get it as a tattoo.