If there are few examples of God's work in the US, who is to blame? We are all born crippled in some way, I've read. Mistakes are easy to make, especially when painful context is forced upon an individual. Those who attempt the path are instant targets for those who most need it but won't make the effort. No matter how ludicrous the individual, especially the pompous windbags, I still have some compassion when they fall into their weaknesses.
Negativity would be characterized as those who purposely interfere with the free will and capacity for evolution in others. Again, forcing context upon others that could result in them causing harm in order to protect themselves or others, such as family. Times of war are a good example; true negativity would seek ways of causing slippery slopes into war, and individuals would have to solve the trouble. To kill is to interfere with the evolution of another, even if it is in self-defense. This is a tricky set of issues I'm not qualified to call true, but I've been reading too much lately.
In regard to reincarnation, since no one asked, your actions cause you to move up and down the scale of consciousness. Folks like Hitler and Stalin, directly responsible for all of those deaths, are purported to suffer erasure of personality, reincarnating as groups of bacteria, the lowest form of life known on the planet. The purported lower consciousnesses who manipulate and goad others into performing negative-going actions don't receive all of that karma; it is said that the "fallen angels" still have positive karma for large good works and might avoid final judgement. Thus the trick of "evil", causing others to be erased while suffering little in comparison. Negativity doesn't serve anything but itself and the desire to negate the positive.
The thing about good, is that it is selfless and will help and sacrifice for others even at its own expense. There is always help if you surrender in order to allow it to operate. It's an active relationship, and it's detailed in paths such as Tibetan Buddhism and Hinduism, by the name Guru Yoga. You can find derivatives in the 12-Step programs. Is there a God? Ask your friendly recovering addict where their guaranteed fatal disease went, and how easy it is to fall back into it. There is proof of something there, judge for yourself.
And the claims of spirituality are being quantified by physics. Check this out:
http://www.life-enthusiast.com/twilight/research_emoto.htmIt definitely goes to the concept of working to retain positive thoughts and attitude regardless of the context you find yourself caught up in. Especially these days.