The Katyń forest massacres (to the extent that about a third of the victims were targeted for being members of the intelligentsia) come to mind as a reasonably similar instance of the kind of "lynching" you're referring to. Within the USSR itself we have the purges of leading intellectuals in Ukraine -- the number of victims is more difficult to quantify, but was likely far beyond the few hundred known by name:
https://en.wikipedia.org/wiki/Executed_Renaissance
The June 1941 (and later) deportations in the Baltics (involving inevitably a very high mortality rate) seem to have at least partially targeted the intelligentsia as such in those Republics (in addition to the other usual suspects).