I've only seen the one posted here in this thread. IMO, it doesn't step over any lines. He doesn't gain any game-mechanics advantage out of it. It can easily be countered by other claims that are not too difficult to make. And it's not likely to convince anyone who doesn't want to be convinced. The only people who believe will be those who are already looking for a reason for war.
For the record:
Roleplay from Nigel De La Fere (7 hours, 15 minutes ago)
Message sent to the Rulers of East Continent (8 recipients)
Nigel entered the lands of Obendorf, a border land of Nivemus, through the main road in the south-west. His first impression was good, the peasants in a small village were speaking happily and everything looked fine. Nigel wondered how come these peasants are ten times more happier than those in Perdan...
...that was his first impression. He walked down the road and hid himself in the bushes without to be seen. He monitored the people close, as something didnt feel right. There were a lot of women and children, but very few men. And the men who were there, formed a group and stood by themselves. Away from the others. But yet closely monitoring what was going on... Every once in a while the women looked at the men with hatred and disgust in their eyes.
A group of peasants walked by and talked among themselves.
"We must be quiet sister, please stop crying, they promised that if we behave that we are happy then we will see father again. They will release him and everything is fine againg..."
Then a young woman started screaming and attacked the men yelling:
"Give my husband back you pigs, I am with child and my husband needs to be with me. Give him back you bastar...." The woman was caught mid speech, she was quickly thrown into a house. Before Nigel could get close, he saw the dead body of the woman carried out of the building. She was put on a carriage and started moving away from the village.
Nigel quickly followed. Ther horse carriage went off the main road. Towards a large hole in the ground. The body was thrown in the hole. Nigel waited the carriage to leave and inspected the hole. He stopped in terror, atleast a hundred dead bodies. Some without heads, some torn into pieces, tortured...
He has seen a lot of terror on Beluaterra, but even the daimons did not dishonour the human bodies like that.
Disgusted with the situation, Nigel moved on deeper into the region. He encountered several of these holes, some freshly covered with dirt. He could only imagine what lies down there...
Soon he noticed that the villages deeper into the region are rather empty. Some houses burnt. He grabbed some locals and tried to question them but everybody was full of fear and disgust towards strangers.
As he was finding a hideout in the forest, he found about a hundred of men and women, everybody able to escape was here. At start the locals tried to attack him but as he loudly explains his origin, they calmed and greeted him happily. It turns out the armies of Nivemus went by the villages and recruited forcefully, those who opposed were killed. People tortured and houses burnt. Some of the people managed to escape though. Others were forced to work on the fields under opression.
Nigel decided to help the poor people out of the region. They decided that after nightfall Nigel turns the attention in the soldiers to himself, makes them chase him and gather in one place so there would be a possibility for the locals to escape towards Westmoor. He did not know if he will survive this, but these people deserve a chance to escape this terror.