Every person in the United Mexican States shall enjoy the guarantees granted by this Constitution, which cannot be restricted or suspended except in such cases and under such conditions as are herein provided.
Slavery is forbidden in the United Mexican States.
Slaves who enter national territory from abroad shall, by this act alone, recover their freedom and enjoy the protection afforded by the laws. The State cannot permit the execution of any contract, covenant, or agreement having for its object the restriction, loss or irrevocable sacrifice if the liberty of man, whether for work, education, or religious vows. The expression of ideas shall not be subject to any judicial or administrative investigation, unless it offends good morals, infringes the rights of others, incites to crime, or disturbs the public order. Freedom of writing and publishing writings on any subject is inviolable. No law or authority may establish censorship, require bonds from authors or printers, or restrict the freedom of printing, which shall be limited only by the respect due to private life, morals, and public peace.