He opposed the May Coup of Józef Piłsudski and the subsequent establishment of "Sanacja".

Entity and relation annotations:
id: 0
type: entity
value: text: May Coup
labels: <Event>
id: 1
type: entity
value: text: Józef Piłsudski
labels: <Person>
id: 2
type: entity
value: text: "Sanacja"
labels: <Organization>
type: relation
to_id: 0
labels: Person:participates_in:Event
from_id: 1
type: relation
to_id: 2
labels: Person:founds:Organization
from_id: 1