Conservative Latinos plan to hold an "unprecedented gathering" in Boulder, Colorado, the site of the CNBC presidential debate on Oct. 28, to counter anti-Latino perceptions sparked by GOP front-runner Donald Trump.

Organizers have invited "the people and organizations the RNC and GOP campaigns count on to engage the Latino electorate," said Alfonso Aguilar, who heads the American Principles Project's Latino Partnership, The Washington Post reported. "We'll discuss the tone of the primary, comments about the Hispanic community and some of the immigration proposals that have been made."

Trump has been at odds with the Latino community since he launched his presidential campaign by alleging that Mexico brought "criminals" and "rapists" to the United States, and his radical positions on immigration have irked even conservative Latinos.

In yet another attack on Latino advocacy groups, meanwhile, the Republican front-runner on Tuesday said that such organizations -- some of which had called on NBC to disinvite him from hosting "Saturday Night Live" -- are "scammers," The Hollywood Reporter noted.

"These are people that go around, they look for money from people," Trump told CNN. "I had a group come up to me, the very supposedly prominent group. The first thing out of their mouths is like, 'Would you like to join our coalition? It will cost from $25,000 to $2 million to join.'"

But the meeting in Boulder, on Oct. 27, will focus less on Trump and more on Texas Sen. Ted Cruz, one of the candidates with a Latino background challenging the real estate tycoon for the Republican Party's 2016 nomination, according to The Washington Post.

Aguilar's group plans to hold a news conference to "identify several candidates that will not have our support and who we are certain that if they become the GOP nominee will not get enough Latino voter support to win the general election," the Latino Partnership leader said.

Also present at the event will be representatives from the LIBRE Initiative, a group backed by the billionaire Koch brothers; the Latino Coalition, a national organization of Hispanic business leaders; the Hispanic Leadership Fund, a conservative group; the National Hispanic Christian Leadership Conference, the nation's largest Latino evangelical organization.