Lenin on the topic of shouting, the Alexinsky methods, particularly relevant to the verbally abusive methods employed within SEP branches:

“At the 1907 London Congress the Bolsheviks would dissociate themselves from Alexinsky when, in reply to theoretical arguments, he would pose as an agitator and resort to high-falutin, but entirely irrelevant, phrases against one or another type of exploitation and oppression. ‘He’s begun his shouting again,’ our delegates would say. And the ‘shouting’ did not do Alexinsky any good.

“There is the same kind of ‘shouting’ in Kievsky’s article. He has no reply to the theoretical questions and arguments expounded in the theses. Instead, he poses as an agitator and begins shouting about the oppression of the Jews, though every thinking parson will realise that his shouting, and the Jewish question in general, have no relation whatever to the subject under discussion.

“Alexinsky methods can lead to no good.”

(https://www.marxists.org/archive/lenin/works/1916/carimarx/7.htm)

Originally quoted here among other quotes: (https://randomposter33.org/2022/03/14/lenin-defends-democracy-denounces-shouting-delegates/)