Former Mayor Rudy Giuliani and current Big Apple leader Bill de Blasio got into a finger-pointing Twitter war Tuesday over a pair of brazen water-bucket attacks on uniformed NYPD officers.

“This disrespect for the uniform in NYC is result of a Democrat-Progressive (Retrogressive)-Socialist Mayor,” wrote Giuliani just before 6:30 a.m. “This is what happens with knee-jerk disrespect for police. It will only get worse until these Left wing idiots are defeated.”

Giuliani went after de Blasio in another tweet hours later, posting a video of one of the attacks with the message, “This is the result of left wing policies of one of the ‘Progressive’ Democrat candidates for President. He is single handedly trying to deconstruct all that the two prior Mayors accomplished. Most [sic] be respect for those who protect us.”

De Blasio fired off a response around 12:40 p.m., which began by condemning the Manhattan and Brooklyn dousings, videos of which were posted online Monday.

“When you disrespect our NYPD officers, you disrespect ALL New Yorkers,” wrote Hizzoner. “We don’t tolerate that in our city.”

The mayor insisted, however, that police-community relations are on the mend from a fracture created on Giuliani’s watch.

“The truth is crime’s NEVER been lower in New York City and that’s because we’re bridging the divide between police and communities — a divide @RudyGiuliani helped create,” wrote de Blasio.

The pair of ambushes on unsuspecting officers as they tried to make arrests has incensed NYPD brass, who reminded officers that they can fight back with arrests.

As for the two incidents already documented, Chief of Department Terence Monahan vowed Tuesday that arrests would be made and the perpetrators brought to justice.