Why did Fidel Castro and his supporters travel to Mexico in 1955?

Fidel Castro and his supporters traveled to Mexico in 1955 following their release from prison under a political amnesty. They went to Mexico to continue their campaign against the dictatorship of Fulgencio Batista and to form a disciplined guerrilla force.12

While in Mexico, Fidel Castro organized Cuban exiles into a revolutionary group known as the 26th of July Movement. This movement was named to commemorate the 1953 attack on the Santiago de Cuba army barracks and served as the foundation for their subsequent efforts to overthrow the Batista regime.213