This reproduction is permitted under the Article 45 of the Salvadoran copyright law, which states:
the following shall be allowed without the consent of the author or remuneration: . . . the reproduction of a work of art on permanent display in a street, square or other public place in an artistic medium different from that used for the making of the original; with regard to buildings, this right shall be limited to the outer walls
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.