Ok here's how I see it.
Something unpleasant happened in your past that continues to haunt you even today. Benjamin Franklin, Beethoven and men wearing white wigs in your dreams are symbols of history. Another word for history is the past. You want to eliminate the memory or the actual unpleasant incident that happened the past. Perhaps in your waking life you've tried methods to erase that memory or are in denial of it. Your subconscious mind is telling you that you cannot kill the past or change it. The fact that you're trying to kill the men in white wigs who refuse to die is indicative of this.
The mobile home setting in your other dream once again takes you back to the place where you used to live. Another symbol of the past. While skeletons can represent something that's not developed, death, change, transformation etc in a dream, they are also a metaphor for what's hidden... "the skeletons in your closet". Skeletons you are fighting or running away from in your dream
While your subconscious mind is confirming that something terrible happened in the past, and that you cant change it or run away from the incident, it also offers you a solution that will help you come to terms with your past. Here it is...
To dream that you're in an arena means that you need to be in a situation and atmosphere where you can freely express yourself. Perhaps about what happened to you in the past. The arena also indicates that there are issues which need to be brought out in the open on the right platform.