© Ruptly
The protesters carried large red banners and flags, saying "Heil Merkel!" and bearing a logo showing two hands pressed together in a "diamond" - Merkel's distinctive gesture.
Protesters were also heard loudly chanting the same provocative slogan as the chancellor's car arrived at Germany's Leopoldina National Academy for Science. Merkel appeared oblivious to the clamor.
At the academy, the chancellor was handed a statement drawn up by heads of national academies of the 20 leading economies, which have been calling for improving global healthcare ahead of the G20 summit in Hamburg.
"As presidents of national academies and representatives of your countries, you are building bridges," Merkel said, noting that it was especially important that the statement could be understood by ordinary people, not just scientists.
Merkel also said that if the world faces a pandemic like the Spanish flu, "the world could plunge into a very difficult state. And that's why a topic like health should be on the G20 agenda."
This is not the first time that Merkel's critics have attempted to take a swipe at the politician by comparing her to infamous Nazi leader Adolf Hitler.
Earlier in March, the Turkish daily Güneş depicted Merkel in full Nazi uniform, holding a gun with a caption saying "#Frau Hitler" (written in German) while the Turkish headline called the German leader "she-Hitler."
The newspaper, founded by President Recep Tayyip Erdogan and supporting his policy, echoed Erdogan's opinion who earlier said that the German government's "current actions are no different to those of the Nazi period."
Merkel recently said that "these comparisons of Germany with Nazism must stop. [...] We will not allow the victims of the Nazis to be trivialized," while addressing the Bundestag on March 9.
The diplomatic row with Turkey comes as Erdogan is making huge efforts to gain "yes" votes in April's referendum that may significantly extend his powers.
The spat escalated after some German cities banned political rallies for Turkish communities that were expected to be held by Erdogan's ministers.
Should Erdogan receive enough "Yes" votes in the referendum, he will assume the power to issue decrees, declare emergency rule, appoint ministers and state officials, and dissolve parliament.
Critics, including those in Germany, have been saying that a "Yes" vote in the referendum would abolish the country's system of checks and balances.
level or on higher levels like the Rockefeller dynasty. The old man is dead at 102 after 6 (!!!) heart transplants and 2 liver (!!!) transplants. Imagine the amounts of drugs and booze this guy literally drowned himself into. Regardless of these "leaders" that leading is the last role they should have undertaken on this planet , are the rest of us getting any more mature , wiser , better overall ? Because if we do eventually these people will perish and then only this planet will become a better planet.