It is not an opinion that he owes 4.6 million in taxes. Furthermore, according to Politico "Sharpton has more than $4.5 million in tax liens against him and his businesses, the investigation found. His nonprofit organization National Action Network owes some $1.1 million in overdue payroll taxes. He has repeatedly not paid hotels, travel agencies and landlords. He has even relied on friends and his nonprofit to pay for his daughter’s education, and been sued twice by his landlord for a cumulative $98,000."

I guess it might be considered opinion to say he is a deadbeat but that doesn't mean it's not a true statement.