This is the 15905th most frequent Russian word.
пророссийские
Pro-Russian.
Here 'пророссийских' serves as an adjective describing the type of views the group adheres to, emphasizing affiliation or support for Russia.
Они придерживаются пророссийских взглядов.
They adhere to pro-Russian views.
In this case, 'пророссийских' modifies 'организаций' to indicate entities that act in support or favor of Russian interests.
В СМИ появились сообщения о деятельности пророссийских организаций.
Media reported on the activities of pro-Russian organizations.
Here, 'пророссийский' characterizes the nature of the decisions, suggesting alignment or favor towards Russia.