Path of Resentment

Barbarians who follow this path tend to have had a hard life and therefore have a lot of pent up anger and trust issues. Some give in to the anger and let it consume them but most try to see the best in people and try to limit the danger to others. Those that follow this path are usually loners and slow to trust, but once you have their trust they will do anything to protect you. To them you are family and they will die to protect you. As such they tend to do better with protective gear than most other barbarians. 

Spreading Madness

Starting at level 3 while raging anyone within 30ft of you (after 12 seconds (2 rounds) of you raging) must make a wisdom saving throw (DC 8+constitution modifier+proficiency bonus) to not be affected by your rage. If they are affected they gain all advantages and disadvantages of rage and cannot tell friend from foe. The time limit increases 6 seconds at level 6,10, and 14

Protective Spirit

Beginning at 6th level if you are wielding a shield any ally within 10ft of you at the start of your rage gains a +2 to their AC until your rage ends. Range increases by 10ft at 10th,14th. and 20th level.

Restrained Rage

Starting at 10th level you can pick a number of people (who you care deeply about) up to your WIS modifier (Minimum of 1) who are immune to your spreading rage

Shield of Rage

You gain the Protection fighting style and the ability to summon a ethereal shield (+2 to AC or disadvantage on attack up to the discretion of the DM) in front of an ally within 60 ft of you as a reaction to them being in danger. You must be raging to use this ability and can use this ability up to your CON modifier (Minimum 1)