An extremely affective tool to support ones notion in the present day world is Advocacy & lobbying. But let us first see what is the difference between the two," Advocacy” and “Lobbying".

Advocacy is the act of arguing in favor of something, such as a cause idea or policy – Raising your voice whileLobbying is any attempt to influence specific legislation.

Lobbying can be done in two ways:
Contacting or urging the public to contact policy makers for the purpose of proposing, supporting, or opposing legislation.
By advocating the adoption or rejection of legislation.