participating in public debates
The president of Germany is the most important citizen.
The most important duty of a citizen is to be loyal and devoted to his/her country in any circumstance. The citizen should abide by the legal system of the country, respect and uphold the principles of the constitution. The citizen should not act in a way that will be against its laws.
No, I do not believe that you have to be a US citizen to act.
As a citizen, you do not have a duty to act. You may ignore it if you wish, but most would appreciate if you assisted law enforcement.
The right to vote.
Kubrat Pulev, the boxer
The main responsibility of a citizen is to obey laws.
Good citizen representation.
The most important citizens of Japan are the Ainu because they discovered it.
to vote in the most honest, and fair way possible. (:
Obeidience
Most people are born into their citizenship. However if people have decided that they want to become a citizen of another country, that is an important life choice that may have involved a great deal of sacrifice and determination. The final act of becoming a new citizen of your chosen country is therefore a great relief and achievement - a very emotional moment.