Are the Central Banks Causing the Bear Market?

The central banks have certainly added to the volatility that we've been seeing. They bought when they were high and then, of course, tried to raise interest rates by setting the rate at the open FOMC. The bond value increases, which they book as part of their asset rise - increasing their capacity to lend. Their assets also rise more than their liabilities in that case, do their equity increases. Now, we're having a bear market, and who caused the bear market? Are the ones who are causing the bear market?"