what was the reason for the above person's arrest?
For killing Heather Heyer and injuring 19 other people with his car.
Unite the Right rally
At around 1:45 p.m., self-identified white supremacist James Alex Fields Jr. deliberately rammed his car into a crowd of counter-protesters about away from the rally site, killing Heather Heyer and injuring 19 other people. 
what is the munroe bergdorf race row incident all about? An incident involving Munroe Bergdorf and her controversial comment quoted by the " Daily Mail" regarding white people. who is the above person? A British model. could you quote that controversial comment she made? "Honestly I don't have energy to talk about the racial violence of white people any more. Yes ALL white people".  and  "Once white people begin to admit that their race is the most violent and oppressive force of nature on Earth... then we can talk." on what platform did she make that comment? Facebook. which brands did she work for? Illamasqua ,and L'Oréal,. what race was she? She is a mixed race trans woman of white English and black Jamaican heritage. what happened to her career after that incident? L'Oréal fired her from its campaign and Facebook removed her posts from their website. what could be the possible reason for her making this comment? The comments were made in the wake of the Unite the Right rally in Charlottesville. you had mentioned two brands with which she worked, can you tell me what does the first brand deal with? It is a beauty product brand. you had mentioned a rally which took place, what was that rally all about? It was a white supremacist and neo-Nazi rally. when did that take place? From 11 to 12 August 2017. name some members from that demonstration which took place. Richard Spencer,  Baked Alaska, Augustus Invictus, David Duke, Nathan Damigo,and others. were there any counter-protesters during this session? Yes, those who marched in counter-protest were unified in opposition to white supremacy. was there someone who was arrested in this session? Yes, James Alex Fields Jr.
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Unite the Right rally [SEP] Introduction
At around 1:45 p.m., self-identified white supremacist James Alex Fields Jr. deliberately rammed his car into a crowd of counter-protesters about away from the rally site, killing Heather Heyer and injuring 19 other people. Fields fled the scene in his car but was arrested soon afterward; he was tried and convicted in Virginia state court of first-degree murder, malicious wounding, and other crimes in 2018, with the jury recommending a sentence of life imprisonment plus 419 years. The following year, Fields pleaded guilty to 29 federal hate crimes in a plea agreement to avoid the death penalty in this trial.