"Germany, you don't have anything to do with democracy".
He added: "We will talk about Germany's actions in the global arena and we will put them to shame in the eyes of the world", he continued.
The justice minister had himself been scheduled to speak in the small western German town of Gaggenau on Thursday, but his rally was also cancelled.
The row has further soured relations between the two North Atlantic Treaty Organisation members amid mounting public outrage in Germany over the arrest in Turkey of a Turkish-German journalist. "We can't continue to negotiate about membership with a country that has been steadily distancing itself for years, during ongoing access talks, from democratic standards and principles of the rule of law".
Some city officials have cited security concerns for cancelling the rallies, but others have admitted they do not want the meetings to be used for propaganda purposes by Turkey.
"We will talk about Germany's actions in the global arena and we will put them to shame in the eyes of the world", Erdogan said.
"Then we best demonstrate most clearly the difference between us and an autocracy on its way to dictatorship when we show that freedom of opinion, freedom of assembly and, of course, press freedom applies to all", Roth said. "This way, countries like Germany that have banned such addresses will not be pressured separately by Turkey", Kern told the Welt am Sonntag.
Under the new proposed constitution, Turkey would have an executive presidency along the lines of France or the U.S., including powers to directly appoint top public officials such as ministers.
Dutch nationalist Geert Wilders, expected to make huge gains in a March 15 election, said on Sunday he would declare "the whole cabinet of Turkey persona non grata".
Erdogan's words triggered great discontent among the German politicians, straining the already tense relations between Berlin and Ankara.
Since it resumed its armed campaign in July 2015, the PKK - listed as a terrorist organisation by Turkey, the United States, and European Union - has been responsible for the deaths of approximately 1,200 security personnel and civilians, including women and children. An EU deal with Turkey, which also is a North Atlantic Treaty Organisation member, has significantly cut the number of migrants crossing into Europe. Turkey has stuck to all of its commitments resulting from the refugee deal in any case.