Photo by Yasin Ozturk/Anadolu Agency via Getty ImagesTesla has been kicked out of the S&P 500 ESG index despite its focus on making zero-emission products."ESG is an outrageous scam! Shame on S&P Global," Tesla CEO Elon Musk tweeted in response.Here's why Tesla was kicked out of the sustainably focused stock market index this week.Tesla stock was kicked out of the S&P 500 ESG Index on Wednesday despite its focus on making electric vehicles, solar panels, and batter packs.S&P Global executed its fourth annual rebalance of the sustainably focused, large-cap index this week, and the portfolio looks relatively similar to the plain-vanilla S&P 500 index.