The Pacers allowed their opponents just over 23 free throws per game throughout the season, but the Raptors averaged over 34 FTAs in their three real games against the Pacers.
Toronto's style of play, led by Kyle Lowry and DeMar DeRozan, makes it tough on the defense to avoid contact. By attacking the lane, they force defensive rotations which naturally leads to a reach or bump when the rotation is even a half-step late.
Those foul shots were a topic for discussion with the Pacers on their first day of preparation for Game 1 and they were able to use their playoff experience to make fouls an issue in the media before the game.