Am I wrong?

So I found out some information pertaining to my family unfortunately. A handful of them have a history of touching on family members regardless of age.

Now I didn’t grow up with them but this is the first time in 4 years that I’m hearing of this. Some people whom of which have been around my kids. So naturally I got pissed off for starters. However I had to calm myself down enough to schedule an appointment for them to get checked to make sure no one has touched my babies.

NOW my WHOLE (only one of the ones that told me is included in that) family is trying to say I’m wrong for bringing it up and saying something, and that I’m lying and had no right to get my child checked. But why would ANYONE from the family come to ME and tell me anything like that if it wasn’t true? Why would my little cousin cry to me about what’s been happening to her and why would an older cousin say “oh you didn’t know that? Everybody knew that” if it wasn’t truth behind. Why would anyone not deny it instead of saying they’ll kill you when you ask about it??? Like it just doesn’t add up. Then want to tell me I’m wrong for being mad and wrong for keeping my kids from them. Like how???