Their views were in general along the lines that there are poor people and there are rich people. Poor people owe nobody nothing (including respect to property rights, personal space, privacy and so on), and are owed everything. Rich people vice versa, it’s them paying with rights for their asocial riches.
Now who’s poor is not absolute, it’s who owns less than deserved, and what’s deserved is big for their friends and similar-minded people. And who’s rich is the same, but owning more than deserved, and if they don’t like you, you deserve less.
It’s the kind of people who love Stalin.
For oligarchy they are not, since economic development reduces the oligarch’s power, which is a thing relative to the total size of economy. Same with social power.