New Forum and several artist groups organized the Alexanderplatz Demonstration to demand political reforms (2) 
The Alexanderplatz demonstration brought together political dissidents, cultural elite and reformers from within SED (3)
Speakers at the event included dissidents like dissident Marianne Birthler, artist Bärbel Bohley and scientist Jens Reich (4)
Also cultural figures like writers Christa Wolf, Stefan Heym; actor Ulrich Mühe; dramatist Heiner Müller (5)
The Alexanderplatz Demo was state sanctioned and attended by “reformist” Berlin SED chief Günther Schabowski (6)
Markus Wolf, former head of Stasi foreign intelligence, also spoke at Alexanderplatz but was booed by the crowd (7)
Bohley on crowd booing Markus Wolf “We can go now, now it is all over. The revolution is irreversible.” (8)
Posters in crowd with slogans “Civil rights not only on paper” “Socialism yes, Egon no” “Democracy for the SED” (9)
Here is @JanJosefLiefers talking about addressing the crowd at the Nov. 4 1989 Alexanderplatz rally and getting an offer of Pflaumenkuchen from Markus Wolf.
@JanJosefLiefers 30 years later. Celebrating the Nov 4 1989 Alexanderplatz demonstration on Alexanderplatz. Slightly smaller crowd this time.
@JanJosefLiefers Alexanderplatz today with projections of the GDR from 30 years ago.
