Accusing the Congress of insulting its veterans, Union Home Minister Amit Shah on Friday said the way Prime Minister Narendra Modi felicitated former Karnataka chief minister B S Yediyurappa on his birthday is something which all political parties should learn on how to treat such leaders.

Addressing a public meeting here, Shah said the Congress always insulted its leaders -- be it S Nijalingappa or former Chief Minister Veerendra Patil.