Yes
The violence of Al Capone and other organized crime leaders reduced support for Prohibition.
The KKK is a secret organization. However, there were KKK groups in Pennsylvania is the 1920, largely because of its staunch support of National Prohibition.
members of the public
President Roosevelt's platform included a plank calling for the repeal of Prohibition.
Prohibition came as a result of strong pressure from various Protestant denominations and temperance groups such as the Prohibition Party and the Woman's Christian Temperance Union.
Organized criminals, bootleggers, moonshiners, and public officials who were corrupt were among the beneficiaries of Prohibition.
Demands from the WCTU and other womens' groups along with pressure from Protestant churches caused Prohibition.
People didn't support it
National Prohibition in the US began in 1920 but support for it declined throughout the 1920s.
The WCTU, among many other groups.
Criminals and corrupt public officials.