KARACHI: Pakistan People’s Party (PPP) Chairman Bilawal Bhutto Zardari has expressed grief and sorrow over the demise of world’s greatest heavyweight boxing legend, Muhammad Ali, who passed away in Arizona State of the United States. According to a statement issued, Bilawal said, “Muhammad Ali was not only a greatest sportsman but also among greatest human beings the earth has ever produced who fought against his opponents with same spirit whether it was boxing ring or against racism and discrimination against his people.” Bilawal Bhutto Zardari said Muhammad Ali is a golden chapter in the history of mankind for his bold struggle, which changed negative thoughts and attitudes of millions of people towards human equality around the world. Paying tributes to the greatest boxing icon, the PPP chairman further said that Muhammad Ali is in the memories of people especially the generations of millions of people whose lives marked great improvements due to his efforts and narratives.