The tumult. The chanting. The shushing. Derrick Rose has seen and heard it all before.

And so, the cacophony of invective that came out of Game 1 of the Knicks-Hawks playoff series, directed at or instigated by Trae Young, might be worthy of angst for some, but not for the Knicks’ second-oldest player.

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“That’s basketball,” Rose said Wednesday morning, smiling. “When did the league get so soft?”

Rose had been subbed out for defensive purposes and watched from the Knicks bench as Young got past Frank Ntilikina and hit the game-winning shot, a floater with 0.9 seconds remaining in a 107-105 victory for the Hawks. Young, after hearing the Garden crowd throughout the evening include his name in an obscenity-laced chant, put his finger to his lips, a simple gesture to shut up the fans jeering him.