The SPD expelled the SDS out of irritation, not ideological incompatibility.

Evidence

Since the left-wing intellectuals who had come to dominate the SDS had certainly been willing to reach an understanding with the party executive, and had, for example, declared that they were opposed to blind anticommunism but also supported maintaining a critical distance towards communism in Germany, the only explanation for the behaviour of the SPD party executive was that it was irritated about various other matters. — Rolf Wiggershaus, The Frankfurt School, 590

Categorization

• QUESTION: What does the archival record actually show about the executive’s internal reasoning, if it was never publicly given?
• XREF: connects to: The SPD executive retroactively expelled the SDS without stating any grounds. — Rolf Wiggershaus, The Frankfurt School: Its History,…, 590; The SPD expelled its own critical left-wing public sphere when it banned the SDS — Rolf Wiggershaus, The Frankfurt School: Its History,…, 2381; The SPD expelled the SDS over atomic weapons, Nazi-lawyer exposures, and Godesberg criticism. — Rolf Wiggershaus, The Frankfurt School: Its History,…, 2381 (+1 more)
• yield-rescued: below the book’s yield-target cutoff, included anyway for connecting to: The SPD executive retroactively expelled the SDS without stating any grounds. — Rolf Wiggershaus, The Frankfurt School: Its History,…, 590; The SPD expelled its own critical left-wing public sphere when it banned the SDS — Rolf Wiggershaus, The Frankfurt School: Its History,…, 2381; The SPD expelled the SDS over atomic weapons, Nazi-lawyer exposures, and Godesberg criticism. — Rolf Wiggershaus, The Frankfurt School: Its History,…, 2381 (+1 more)

Broader Connections

• The SPD expelled the SDS over atomic weapons, Nazi-lawyer exposures, and Godesberg criticism. #complicates (0.80) — Rolf Wiggershaus, The Frankfurt School, 2381