The real problem is scientists wanting to play God. 
The real problem is that this has morphed over the years from grant-gathering junk science to an assumption, fostered by media and special interests, to idiots actually thinking they can control the climate, except for their ability to screw with a natural system in attempts to somehow 'set' the temperature of the planet.
This hubris will not end well, because humans have thrived in warm climates, and died like flies in cold ones.
Add in the modern propensity for instantaneous gratification, and there is no way the proponents of this scheme will cut off a degree of anticipated warming, they WILL overshoot, and because their data is corrupted and the models flawed, could well start the next ice age trying to reduce temperatures by an inflated number derived from flawed models that was once used to panic the grant machine out of more money and suckers out of donations, a number that they have begun to believe because they have managed to suppress any information or thought to the contrary, even going so far as to use truant teenagers to do so.
Such is the danger of censorship, it cranks up the volume and reverb in the echo chamber.
Every single action taken, predicated on improving the environment, has had "unintended consequences", and this will be no exception.
