The song "La Primera Piedra" by Los Doltons talks about the hypocrisy of people who judge and criticize others while ignoring their own faults and shortcomings. The lyrics criticize those who are quick to condemn and point fingers at others, without acknowledging their own mistakes and sins. The singer acknowledges that they have their own flaws and sins, but they choose not to judge others because of them. They call out the hypocrisy of those who act self-righteous and throw the first stone, as if they themselves are without sin. The song conveys a message of self-awareness and understanding, urging listeners to live their lives without passing judgment on others. It also delivers a critique of the judgmental attitude that is prevalent in society.