Given the emotion anger and the tweet "the world drives whoever it has assessed as tenderhearted or vulnerable to build up their guards &amp; invigorate raging self defense mechanisms", classify the intensity of the emotion displayed in the tweet. The classification options are: 0: no anger can be inferred, 1: low amount of anger can be inferred, 2: moderate amount of anger can be inferred, 3: high amount of anger can be inferred.
2: moderate amount of anger can be inferred