"Fracking" has been practiced for a half-century already. What's relatively new is "horizontal drilling" to release more of the natural gas, rightly; that doesn't sound ominous.
The Left is against fracking because it threatens Russia's main source of wealth: natural gas exports to Europe.
Without that money Russia would have difficulty warring in Ukraine, today, and Estonia, tomorrow.
Fracking in North America would reduce dependence on Middle East oil, which finances terrorism.
Look at this film again. This time, with a skeptical eye, eg. the list of "dangerous chemicals" like copper!