The decree by Cardinal Angelo De Donatis, Pope Francis' vicar for the Rome archdiocese, will remain in effect until at least April 3.
The posters in honor of slain Iranian general Qasem Soleimani were placed by the European Solidarity Front for Syria.
The illustrator describes himself as a "anti-euro nationalist" and stood by his work. In the past, he has collaborated with the municipality of Rome.
The streets of the Italian capital previously carried the names of scientists who promoted the idea of scientific racism.
The streets of the Italian capital previously carried the names of psychiatrist Arturo Donaggi and Edoardo Zavattari, a biologist who promoted the idea of scientific racism.
Among the areas ransacked were sites that dated back to the 4th and 5th centuries BC, when the coast of southern Italy was dotted with ancient Greek colonies.
"Without the racial laws, I would have been a better player than you," Alberto Sed once told Roma's legendary captain Francesco Totti.
Toaff served as Chief Rabbi of Rome from 1951 to 2001. He was instrumental in turning a Jewish community that was still devasted from the Holocaust into a prosperous center of Jewish life.
The Nazi raid targeting the ancient Jewish neighborhood of the Italian capital, as well as Jews living in the rest of the city, started at 5:15 a.m on Shabbat.