Hello Michah,
The sigh was in part because I'm hurting for some people I care for. That is one of the problems with caring for others, you may feel their sadness.
Manipura is the chakra in the solar plexus. I was talking with a woman a few weeks ago, very knowledgeable. She told me the solar plexus chakra is associated with our sense of separate ego identity, our sense of will and power. Perhaps this is why an action perceived to be a form of deep hurt or betrayal will feel "like a kick in the guts". I had a lot of pain in this area during my experience. It made sense when she explained it's linked with ego identity. The color associated with the Manipura chakra is a warm, sunny, yellow.
Sitting above the solar plexus chakra is the heart chakra -- anahata. This chakra is associated with a deep emerald green. The masculine (Yang) and feminine (Yin) energies come together in the heart center. I had pain in this area too and maybe that's part of what my sigh is also about.
My musical link didn't work for some reason. It pairs well with information related to the heart chakra:
http://thefifthbody.homestead.com/aw...of_sorrow.html
As for love... in its highest form I think of it as of immense intelligence. But also an energy state. Perhaps this is similar to your own experience of "love as a collective state".
~ Namaste
PS: I like your demon run icon.