I second the serious talk idea. It may be worth making a deal with him such as, "I won't wave tofu in your face if you stop waving meat in my face." Whether he supports you or not, phase or not, that is completely unacceptable. I'll tell you right now that anyone who waves meat in my face won't be sitting down to another meal with me anytime soon.
As for the kids, let me first point out that I'm not a parent. A lot depends on how old they are. But if he's feeding them more fast food than you're comfortable with, that's not just a vegetarian issue, that's a general health issue. Another good book on the subject is Food Fight by Kelly Brownell and Katherine Battle Horgen.
I'd suggest taking it slow for now. Work on getting him more comfortable with the idea of you being vegetarian, and work on getting more plant-based foods into the kids. BTW, how long have you been vegetarian? If you just switched in the last few weeks, there's a good chance things will settle down if you just persevere. But if it's already been months or years and this is still a problem, then clearly you'll need to take further steps.