Identification needed

Identification needed

Observation - Identification needed - Global. Description: Plant with thorns and colorful clusters of little flowers as seen in the picture. Characteristic leaves and little round green or black (as visible on the upper part of the photo) berry-like clusters too. Spotted by roadside, among weeds

Plant with thorns and colorful clusters of little flowers as seen in the picture. Characteristic leaves and little round green or black (as visible on the upper part of the photo) "berry-like" clusters too. Spotted by roadside, among weeds