New York City Mayor Bill de Blasio is the 23rd Democrat to declare his candidacy for president.

His detractors are coming out in droves to mock the prospect.

Perhaps the most biting comes from the NYPD officers union.

#BREAKING Statement from PBA President Lynch on @NYCMayor @BilldeBlasio’s Presidential Run. “While the mayor of our nation’s largest city is busy running around Iowa and getting upstaged by the mayor of South Bend, Indiana, there are real problems here at home. pic.twitter.com/0HO4OQYu3u

— NYC PBA (@NYCPBA) May 16, 2019

“It is laughable that a mayor who has shown no interest in running New York City for six years now says he wants to mismanage the entire country,” the statement reads from the Police Benevolent Association President Pat Lynch.

“While the mayor of our nation’s largest city is busy running around Iowa and getting upstaged by the mayor of South Bend, Indiana, there are real problems here at home,” the union says, claiming NYPD cops are suffering from wages 30% below market rate because the mayor has totally check out of our contract process.”

As de Blasio made his campaign announcement on Good Morning America, officers stood outside the Times Square studios with “LIAR” orange foam fingers:

Inside: @NYCMayor @BilldeBlasio makes his pitch as the most “progressive” labor-friendly candidate.
Outside: a loud crowd of underpaid cops say otherwise. pic.twitter.com/zoS5d1IJhy

— NYC PBA (@NYCPBA) May 16, 2019

They chanted “LIAR” and blew whistles as de Blasio appeared on television:

.@BilldeBlasio is no friend of labor pic.twitter.com/taeprB356W

— NYC PBA (@NYCPBA) May 16, 2019