Non-white refugees, arriving in Poland from Ukraine, have faced discrimination from extremist groups patrolling the border, reporters, and residents in the area said.

Iran PressEurope: On March 1, dozens of self-identified right-wing nationalists marauded through the city center of Przemysl, Poland, and harassed refugees who looked to be people of color, the witnesses said. Many non-white refugees have arrived in the city while they evacuate Ukraine.

Many fear extremism will continue to cause trouble for refugees of color trying to escape the Ukraine conflict.

More than 836,000 people have fled Ukraine to neighboring countries since Russian forces began operation in the eastern European country on Feb. 24, according to the United Nations High Commissioner for Refugees (UNHCR).

At least 453,000 of those refugees have escaped to Poland as of March 2, UNHCR said.

Near the Przemysl train station on Tuesday, where thousands of refugees are passing through, anyone who looked to be African or Arab was being targeted by the extremists in the attack, witnesses reported.

Julian Würzer, a reporter for the German newspaper Berliner Morgenpost who is stationed in Poland, told ABC News that extremists aggressively shouted at refugees to get out of the country and allegedly assaulted them.

Online videos are seen by ABC News show police in riot gear diffusing the incident, which Würzer said went on for about 20 minutes before police arrived.

There have been no reports of injuries.

Local authorities did not immediately respond to ABC News' requests for comment on the incidents.

These extremists are a minority in the country, however. There has been an overwhelming effort by local citizens to help those fleeing across the Polish-Ukrainian border. ABC News reporters on the ground say that volunteers across the region have been offering to house, feed, and clothe the many refugees.

Extremists have reportedly been accepting Ukrainians but vowing to “defend” Poland against an influx of non-Christians. These extremists are believed by some to be backed by Russia.

Poland's government has aligned itself in recent years with right-wing ideals and has been criticized for its anti-refugee sentiment.

211