Is this family normal?

I hate my fiancé's family. I hate them.

We are very different people. My family work very hard, proudly own their homes, worked their way up in their careers and are very admirable people. I naturally had a hard time coping with my fiancé's family who never worked a day in their lives and take a lot of money from the council to pay for their luxuries. It bothers me. His parents are perfectly able to work, however they both claim benefits for 'accidents' they had over 30 years ago which makes them 'disabled.'

They admit it isn't true.

They spend their money on big TVs and iPads for their children. Now I don't like children in the first place, but I hate these kids. There are 13 siblings. My fiancé is the fourth oldest at 25, and his youngest sibling is so many months old. Usually there's about 10 young children running around this house, my fiancé's siblings and his nieces and nephews. They don't wear clothes. Which I shouldn't complain about, I mean they are children, it shouldn't be wrong, but some of them are 10 years old and I find it a little inappropriate with them fully nude. They scream and run and make a mess and I just hate that environment. I also have to deal with a lot sexual abuse which is the main reason I detest these people.

I admitly dress in tight and revealing clothing, but it's my style and I love how I look. I don't think it's fair for me to comprise because my fiancé's father can't keep his eyes of me. He's double my age, it's creepy and I have actually started to change my wardrobe around him, which isn't fair. I once went abroad with them, and have never been again after an incident at the pool. I was sunbathing, sunglasses on, and I think everybody presumed I was asleep. I didn't see, since I wasn't facing in that direction, but one of the 10 year old boys was having a stare, which caused everybody to laugh and joke about it once they caught him. But his father, my fiancé's father and my soon to be in laws, urged the kid, my soon to be brother in law, to grab my boobs. I felt frozen. I couldn't believe he said that or that the kid would actually do that. But he did. I ended up locking myself and my furious fiancé in our hotel room for the rest of the day. I was to blame for it. I 'overreacted'.

This is not the first time I have been blamed for not condoning their perverted ideals. My fiancé's mom has an unhealthily obsession with people with disabilities. She has a Down's syndrome daughter, who is 7 and already hates me because apparently she's the one to marry my fiancé (yes her brother). She's pulled my hair and bit me before and tantrums whenever I'm around. Anyways, my fiancé's mom hosts afternoon tea for lots of disabled kids and their parents, which is a nice thing to do I guess. She asked me to help her out one day, since that's what all her daughters do, and I agreed but I was a little reluctant.

In all honesty, I have had no experience with severely disabled people and I was nervous. I don't know how to interact with them, unless they want to attack me, at least I'm familiar with that. I was uncomfortable, I'm sorry to say, especially when a servely disabled teenaged boy soiled himself and tried to eat it out of his pants. And it was the same boy who kept spluttering at me. After his mom started laughing, and he was directly pointing at me, I had to ask what was wrong. She told me he liked me and wanted to put his face between my breasts. I was mortified. But everybody else in the room was either laughing or cooing at him. My fiancé's mother said 'Aww, go on, let him.' And I had to leave. I couldn't understand how that was okay.

After these incidents and many more of my fiancé's father checking me out, I would only wear jumpers around them. My fiancé's father made more rude comments to me, asking me if I was fat now or something, or why'd I have to be such a buzzkill.

My next reason for hating them is the fact that I'm hated by another sister of my fiancé, so much so that she didn't invite me to her wedding and instead invited my fiancé (then boyfriend) and his ex. Who attended and tried it on with my fiancé a few times during the night. I then found out that his sister had tried to have sex with her and my fiancé's eldest brother. And then cried rape when he refused.

To top it all off, one of the brothers has been arrested for attempted beastiality and an uncle has been arrested for having sex with a 13 year old.

You're probably wondering about my fiancé. He's not crazy. He had many fall outs with his family and moved into foster care at 15. We live two hours away from them and he only made contact when he was 18. I met him when he was 19 and I know they have had a rocky relationship. I tried to encourage him to see them and start a relationship but it isn't going well. He argues with them constantly about me, which I know about. They make fun of my job as a camera operator, my fiancé's father in particular who thinks it's code for cam girl. And I stopped my fiancé from doing pot and heroine, which they disagreed with and say I'm controlling. My fiancé was an addict and now he's clean with a job and our own rented home.

Is this normal? Do other people have crazy in laws? If anybody could give me advice I'd be grateful.