I have been with my OH for ten years and we have two DSs - age 4 and 1.
OH has never liked my brother because they hold opposing views on a lot of sensitive subjects - for example, OH votes Tory and my brother campaigns for Corbyn and advocates communism, OH eats a lot of meat and my brother is vegan. I'm somewhere in the middle so get on with both of them. OH says that if he wasn't my brother, he would keep him away from our kids completely because he is a "dangerous lunatic".
I assume that my brother realises that he and OH will never be best friends but he is very sensitive and considerate and always makes an effort with him. OH makes an effort when he sees my brother and is pleasant and sociable but says nasty stuff about him to me behind his back.
My brother is unlikely to ever have his own kids and lives abroad so doesn't see my DCs very often. I think my mum tries to compensate for this by talking about my brother to the DCs a lot - chit-chat about what he's up to and talk about how successful he is - it's very frequent. OH and I both find the constant references weird but it doesn't overly bother me as I think she is just trying to make sure that the DCs don't forget about him and that he doesn't get excluded. OH says that my brother is being put up on a pedestal as if he is some sort of god and that the kids will have a warped view of him. He is worried that they will automatically adopt my brother's view on important issues when they are older because of the way he is being presented as perfect and a close member of the family (which he is by blood but he only sees them a few times a year). OH says that my brother's views are often extreme and that he is uncomfortable with them. I said that we should teach the kids to make up their own minds but OH says that children are very easily influenced and need to be protected.
OH feels unsupported by me and asks how I'd feel if he had a sibling whom I didn't like who was being presented to the DCs in this way. (He is an only child and I get on well with his parents). He wanted to have a word with my parents about it (which I was against because it would cause a lot of upset) but now he thinks that doing so would just cause them to carry on behind our backs. He doesn't really have a solution but says we can't go on like this. It is putting a huge strain on our relationship.
I am really trying to keep everyone happy but I am struggling to see OH's point of view and desperate to avoid family arguments. I think OH has blown it out of proportion but this is how he feels and I can't just ignore him. (For context, we have had many difficult issues in the past relating to OH's relationship with my parents and brother and several periods when OH and my mum were barely speaking to each other, which was highly stressful and upsetting for me).
Any advice or opinions appreciated x