Task: Calculate the intensity of emotion E in the tweet as a decimal value ranging from 0 to 1, with 0 representing the lowest intensity and 1 representing the highest intensity.
Tweet: @Varneyco @SheriffClarke I agree. Rioters destroy property, injure citizens, and threaten lives. We need a zero tolerance policy on riots.
Emotion: fear
Intensity score: 
0.688