sorry you feel this way. do you have an idea of what's influencing the shaping of such ideations? certain triggers and/or trauma? medications as we've had individuals on this site in the past whom have had issues with meds that influenced an increase in violent ideations.
unfortunately, imo, you just can't talk to an average human being about such ideations. there gonna take it far worse because of the inability to understand and look past you're ideations like depression and mental state influences, and what not and just see you as a "violent" individual and nothing more or less. thus, a therapist or crisis counselor, one who wants to and tries to understand and is familiar with such feelings and ideations would be you're best bet. obviously it's a hit or miss, you need to find one you're most comfortable with, whom trusts you as much as you trust them and is willingly to listen and hear you without rushing to precautions. there definitely are some people out there in these fields, who would hold such info under confidentiality. I mean, iv had such encounters not about violent ideation per se, but suicidal ideations with just school counselors, whom didnt take measures in locking me up when i told this person about me actively wanting to ctb, or push me towards meds or doctors, and what not; but wanted to listen, understand and promised the idea of trust between us that made me more comfortable even when the person know of my active ideations.
i guess a convo regarding you talking about having these ideations is fine. but if you push it into ideations with a purpose inside of you in ACTING on these ideations, depending on the person, its a problem because of the safety of others. my advice would be talk about them as simply ideations, nothing more, cause people on here in the past had ideations like urself, but never felt the purpose on acting on them.
hopefully you feel better and find a solution. wish you the best of luck.