I discussed Al-Wara in class when we discussed extremism. What’s the difference? Well, to make a long story short: Al-Wara is good and is the way of the righteous. Extremism is something bad and is the way of the ignorant.
The sad part is that we have confused the two terms today so when we see al-wara we think that it is extremism (e.g. a woman wearing a niqab) and when we see extremism we think that it is al-wara (e.g. a person deciding that he will become vegetarian because he has doubts about every single company on this planet).
Here’s a nice article on the signs of Al-Wara: Ten signs of Scrupulous Piety (Al-Wara) by Imam As-Samarqandi (rahimahullah).