President Donald Trump walks to a March 13 press conference where he claimed a nation-wide coronavirus testing would soon be starting with help from a Google-designed website. Subsequent reporting revealed that the website was not being designed by Google and the drive-up testing system was instead a small pilot in the San Francisco area. Photo by D. Myles Cullen | White House Photo

President Donald Trump amplified a message in a tweet Wednesday that is growing into a central theme of his reelection campaign against Joe Biden: an assertion that crime and chaos would ravage communities should the former vice president win the White House in November.

His campaign has aired advertising in battleground states showing a woman calling police for help as an intruder breaks into her home and getting a voice recording informing her that, because the police have been defunded, no one is available to take her call.

The Republican president recently tweeted a warning to “Suburban Housewives of America” that “Biden will destroy your neighborhood and your American dream.” He sought to amplify the message to “people living their Suburban Lifestyle Dream” by noting in another tweet on Wednesday that he recently revoked an Obama-era housing regulation designed to eliminate racial disparities in the suburbs.

“I am happy to inform all of the people living their Suburban Lifestyle Dream that you will no longer be bothered or financially hurt by having low income housing built in your neighborhood,” he tweeted Wednesday. “Your housing prices will go up based on the market, and crime will go down. I have rescinded the Obama-Biden AFFH Rule. Enjoy!”

Trump, who has repeatedly fumed that cities hit by crimes spikes are all led by Democrats, has tried to argue that Biden, at least implicitly, would condone unchecked violence.

Recent polls show Democrats’ presumptive nominee, former Vice President Joe Biden, holding that edge – with a 9 percentage point margin in the recent Washington Post-ABC News poll and an 11 percentage point margin in a recent Fox News poll. Both surveys showed an especially wide advantage for the presumptive Democratic nominee among suburban women.

That’s a dire prospect for the president. Republicans have long relied on finding upper-income and white voters in the growing suburbs to build on their base in rural America and win elections. But those voters have been harder to win over in the Trump era, forcing the GOP to move farther away from cities, into less-populated exurbs and shrinking small towns, in search of votes.

Boston Mayor Marty Walsh blasted the Trump administration’s decision to abandon the Affirmatively Furthering Fair Housing regulation on Tuesday, calling it “cruel and backwards.”

Other figures from Boston’s real estate scene condemned the president’s Wednesday tweet from their own social media accounts.

“There are so many things that I could say about this and none of them are good,” National Development Managing Partner Ted Tye tweeted.

“Disgusting. Affordable housing is a human right,” tweeted coUrbanize cofounder Karin Brandt.