The former were all about a minority controlling the majority, while the latter is about the majority being in control (although that does not work out all that well always either).
Note that the it is almost impossible to discuss this due to overloaded terms like liberalism which means the opposite depending on who you ask. I define leftism like this: https://en.wikipedia.org/wiki/Left-wing_politics
It's just that I've never seen it in (historical) contexts outside of describing the pre 1920s revolutionaries.
They used "bolshevik" as a term of endearment especially in reference to the old party members.
don't worry most of the left repackaged the old communism into moral relativism and is no longer trying to win that unwinnable battle to keep communism as an ideology detached from all communist implementations.
it's mostly the older guards that still try that line.
It was a relatively small group of men that ended up dominating Russia, partially due to how ruthless they were willing to be.
You mean like every other successful revolutionary party? Revolutionaries that aren't willing to be ruthless end up in prison or on the scaffold. To quote Ben Franklin as he was preparing to sign the Declaration of Independence, 'We must, indeed, all hang together, or most assuredly we shall all hang separately.'
Lenin repeatedly emphasised the need for terror and violence in overthrowing the old order and ensuring the success of the revolution.[252] Speaking to the All-Russian Central Executive Committee of the Soviets in November 1917, he declared that "the state is an institution built up for the sake of exercising violence. Previously, this violence was exercised by a handful of moneybags over the entire people; now we want ... to organise violence in the interests of the people."[253] He strongly opposed suggestions to abolish capital punishment.[254] Fearing anti-Bolshevik forces would overthrow his administration, in December 1917 Lenin ordered the establishment of the Emergency Commission for Combating Counter-Revolution and Sabotage, or Cheka, a political police force led by Felix Dzerzhinsky.[255]
In September 1918, Sovnarkom passed a decree that inaugurated the Red Terror, a system of repression orchestrated by the Cheka.[256] Although sometimes described as an attempt to eliminate the entire bourgeoisie,[257] Lenin did not want to exterminate all members of this class, merely those who sought to reinstate their rule.[258] The majority of the Terror's victims were well-to-do citizens or former members of the Tsarist administration;[259] others were non-bourgeois anti-Bolsheviks and perceived social undesirables such as prostitutes.[260] The Cheka claimed the right to both sentence and execute anyone whom it deemed to be an enemy of the government, without recourse to the Revolutionary Tribunals.[261] Accordingly, throughout Soviet Russia the Cheka carried out killings, often in large numbers.[262] For example, the Petrograd Cheka executed 512 people in a few days.[263] There are no surviving records to provide an accurate figure of how many perished in the Red Terror;[264] later estimates of historians have ranged between 10,000 and 15,000,[265] and 50,000 to 140,000.[266]
What did Ben Franklin do that was comparable to that?
I'm still not sure how the OP knew any Bolsheviks, was anyone calling themselves that in 1970?