The Tavern Brawler feat says:
When you hit a creature with an unarmed strike or an improvised weapon on your turn, you can use a bonus action to attempt to grapple the target.
A creature can use a weapon attack to knock a weapon or another item from a target's grasp. The attacker makes an attack roll contested by the target's Strength (Athletics) check or Dexterity (Acrobatics) check. If the attacker wins the contest, the attack causes no damage or other ill effect, but the defender drops the item.
Since disarming is a weapon attack directed at the opponent, can I use it to disarm a character, then grapple them as a bonus action?
I really want to smack a sword out of someone's hand, grapple them, and take their sword away telling them they can have it back when they've shown they can be responsible adults.