The flag of the United States is one of the nation's most widely recognized symbols. Within the United States, flags are frequently displayed not only on public buildings but on private residences. The flag is a common motif on decals for car windows, and clothing ornaments such as badges and lapel pins.
Ignorance(noun) the condition of being ignorant; the want of knowledge in general, or in relation to a particular subject; the state of being uneducated or uninformed. Ignorance(noun) a willful neglect or refusal to acquire knowledge which one may acquire and it is his duty to have.
For example ignorance of a law which has not yet been promulgated. Ignorantia juris non excusat or Ignorantia legis neminem excusat is a Latin maxim which means ignorance of the law does not excuse or ignorance of the law excuses no one. The rationale of this maxim is that if ignorance of law was an excuse then any person charged with a criminal offense or subject of a civil suit can claim that he or she was unaware of the law in question and avoid liability.