Robert Lewandowski scored twice in the first half to lead Barcelona to a decisive 4-2 victory against local rivals Espanyol, giving them their 27th La Liga championship and first in four years.
With four games remaining, Barcelona reached 85 points and an insurmountable 14-point advantage over Real Madrid in second place.
As Barca began to rejoice, many jealous home supporters onto the ground and cut off the celebration.
