I'm afraid my husband could be violent. But I don't want to ruin Christmas...??? What kind of backwards logic is that?
Really no one can suggest anything about your husband's mental state or intentions. Your husband may be feeding something violent within him, or he may be going through a phase where he is curious about such violence.
I, for one, used to read and watch about serial killers and whatnot. I also have never been violent nor do i have any desires to be so. I find the mindset behind people fascinating, but not the acts themselves. But you can't separate the two.
It's up to you to decide if there are enough reasons to think he's dangerous. If you feel you have enough reason then it's time to stop worrying about holidays and other insignificant things and take action.
Exactly a person should be thinking on "am I safe" not "will I ruin a holiday"? or other such things,what matters is "if you feel safe" Maria joy,if you feel "unsafe" then don't worry about "what your leaving behind" the top priority here is "are you in danger",alot of women including my own mother have hung around evil guys that make women feel "too self conscious" thinking on a bunch of small what ifs instead of seeking to "fix a problem" it doesn't matter one bit what we advise here,what matters is "You" if you believe this to be a cause for concern that could endanger you or others then "get away" from this guy,if you think it's just some odd thing that he just watches because he's upset or has a reason that's not questionable then stay with him and tell him it bothers you.
But like I said "You" have to decide what you believe and stick with it,we can't decide things for you,all we can do is give advice in good faith and hope it helps you "come to a decision",obviously you came here because you wanted an "outsider's opinion" now you have some opinions,facts,and constructive advice,that you can either accept or not,if anything else pray to God for answers and let him lead you,we can only help so much.