Why did "Cuando pase el temblor" become an anthem in Mexico after the 1985 earthquake?

The Social Democratic Party (SPD) in the German state of Mecklenburg-Western Pomerania faces a significant electoral challenge in the upcoming Sunday elections. Led by state premier Manuela Schwesig, the party is contending with the rising electoral momentum of the Alternative for Germany (AfD) party in the northeastern region. The contest serves as a critical test for the incumbent social democratic leadership.