A group of White Lives Matter protesters demonstrated outside the Houston NAACP office on Sunday. One of the organizers said the movement's aim was to celebrate heritage and culture, but some protesters' clothing and signs told a different story.

Video from local outlet KPRC appears to show a white supremacist version of the Celtic cross, and another video from KIAH shows a sign that seems to refer to the 14-word white supremacist slogan: "We must secure the existence of our people and a future for white children."

About 20 members of the movement said they were protesting what they believe to be the NAACP's inaction regarding violence against police officers and destruction of property.

"It claims to be one of the largest civil rights organizations in the United States and one of the oldest, and we feel that it is failing in its job in speaking out against the atrocities that have been happening in this country lately -- the attacks on white officers," White Lives Matter movement organizer Ken Reed told KRIV before the protest.

He said White Lives Matter isn't against the Black Lives Matter movement, just "their actions."

The protest took place in a predominantly black neighborhood and almost immediately drew counter-protests.

"The Confederate flag throws me off, you know, because you're saying Black Lives Matter is a racist organization, but then when you throw the Confederate flag up and you're saying white lives matter, are you saying you're racist as well?" one African-American woman told KIAH.

But White Lives Matter protesters said that's not the case.

"We expect every race to be proud of who they are, and we're just out there fighting for our rights just like everybody should," Reed told KRIV.

"It's a physical manifestation of white supremacy, white privilege and racism being protected by this country," one counter-protester told KPRC.

Police officers on horseback showed up to make sure the protests stayed peaceful.