[…]
(3) “Whoever publicly or in a meeting approves of, denies or renders harmless an act committed under the rule of National Socialism … in a manner capable of disturbing the public piece shall be punished with imprisonment for not more than five years or a fine.”
Source: Strafgesetzbuch, StGB, November 13, 1998
Federal Law Gazette I, p. 945, p. 3322, Section 130 “Agitation of the People.”