This seems to be a complicated question, there is no oficial confirmation and deniel as well acording to this article:
Are AfD members "all Nazis" according to court order?
The Offenburg district court refused to carry out criminal proceedings
against a Green politician who had called an AfD colleague a “Nazi”
during the election campaign. "Journalistenwatch" now writes that
according to the court, AfD members are "all Nazis".
The various court justifications show that the individual case decides
when the term "Nazi" may be used against a person and when not.
On December 23, 2017, "Journalistenwatch" published an article
entitled: "Court confirms: AfD members are now officially "all"
Nazis!". The text is currently being shared again on Facebook.
"Journalistenwatch" commented on an article by "Focus" according to
which the Offenburg district court had refused to conduct criminal
proceedings for insult against a member of the "Bündnis 90/Die Grünen"
(Greens) party. The Greens politician is said to have described a
member of the Alternative for Germany (AfD) as a "Nazi" at a campaign
event for the state elections in Baden-Württemberg.
The article from "Journalistenwatch" is marked as "opinion" - the
statement in the title is a clear exaggeration of the reasoning of the
Offenburg district court not to initiate specific criminal
proceedings. Based on the press release from the district court,
CORRECTIV explains the reasons for this decision.
The Offenburg case was also not the first in which an AfD politician
had filed a complaint after being labeled a "Nazi". In two cases there
were court proceedings - CORRECTIV has made itself aware of the
reasons for the judgement. Designation covered by freedom of speech
According to the Offenburg district court, a conviction of the Greens
member for insult is not to be expected - therefore no criminal
proceedings would be initiated. The reason: Although the designation
as "Nazi" would be a disregard for the AfD member, which would
constitute an insult - this is covered by freedom of expression.
There would also not be a case of "abusive criticism" - especially
since the term "Nazi" would also be used in everyday language as a
mere, albeit harsh, designation for a politically right-wing attitude.
Criticism of party, not of individual
There would be a lot to suggest that the designation as "Nazi" was an
"objective, albeit harsh criticism" of the AfD party, less a
disparagement of the individual AfD member. According to his own
statement, the Greens politician wanted to differentiate himself from
the AfD party with this statement - among other things because of the
toleration of right-wing extremist party members while at the same
time claiming the middle-class.
This would be supported by the fact that the statements were made in
the context of the public state election campaign and the parties
involved had previously been completely unknown. Lawsuit by AfD top
candidate Weidel dismissed
Similar cases were brought before the district court of Hamburg and
the district court of Potsdam.
For example, AfD top candidate Alice Weidel sued the NDR satirical
magazine "extra3" because of the term "Nazi bitch". The district court
of Hamburg also dismissed the lawsuit. This emerges from a press
release.
The reason: The controversial statement was made "in a clearly
recognizable satirical manner", which is covered in the context of
freedom of expression. In the specific case, the viewer understands
the term "Nazi" as a gross exaggeration, but does not therefore assume
that the applicant is a supporter of Nazi ideology. Fine for "Nazi"
insults against AfD politicians
A judgment by the Potsdam district court was different. According to
an article in the "Potsdamer Latest News", AfD member of parliament
Steffen Königer was called a "Nazi" by a 31-year-old at his polling
station. The judge convicted the accused of insult and imposed a fine.
On request, the Potsdam district court pointed out that "the accused
only had an argument with Mr. Königer and that the insulting
statements only referred to Mr. Königer".