This verse is speaking about the hypocrites who were among the Muslims in the time of Muhammad. The 'unbelievers who are near you' were, in actuality, non-Muslims posing as Muslims who sought to corrupt the believing Muslims from within. The instruction was to fight them (here, 'fight' means to resist the hypocrites’ skepticism, as we will see in the next verse) without preferential treatment for the social or economic standing.