I didn't say there were no articles about social justice, there are but the articles which seem to elicit the most comments are generally about sexual morality, matrimonial issues,  contraception, homosexuality and feminism.
The articles and comments about social justice are more political than religious. Most writers and posters here seem to be Democrats and are intent on conflating Democratic social policy and economics with Catholic social teaching as though it were impossible to be a genuine Catholic without being a Democrat or further to the  left. There are differences of opinion on how Catholic social teaching is put into practice.
The primary Commandment is to love God and we do that by keeping His Commandments one of which is to love our neighbour as we love ourselves and the rest of them which He has revealed to us in order to effect our salvation. 
You say love is all there is but you must be careful that this love is not just mawkish sentiment or niceness.