Bilaspur (MP), Nov 18: BJP and Congress workers clashed here today when the latter tried to show black flags to Dilip Singh Judeo, who resigned as Union minister following allegation of bribery, during an election rally here. On his first visit to Bilaspur after a Delhi newspaper carried a story alleging bribery charges against him, Judeo was addressing a rally when some youth Congress workers tried to show black flags to him, BJP workers protested the action leading to stone-pelting in which several people from both sides were injured. Bureau Report