Wall Street could soon be in the claws of another bear market as the Trump administration's tariff blitz fuels fears that the added taxes on imported goods from around the world will sink the global economy. The last bear market happened in 2022, but this decline feels more like the sudden, turbulent bear market of 2020, when the benchmark S&P 500 index tumbled 34% in a one-month period, the shortest bear market ever. Here are some common questions about bear markets: Why is it called a bear market?