Well now we have a disagreement that can be resolved. I say the wealthy pay much less in taxes as a percentage of their earnings through all means not just individual income tax filings. See a middle-class guy who earns a wage must pay taxes on all of his income.
A wealthy guy whose income is derived from investments/real estate sales and endowments and entitlements only pays on a small portion of his income. So how can you say that they pay their fair share. If after all of the accounting is done the top 10% earn 90% of the money; but pay only 50% of the taxes what is fair about that? Why should I pay 30% of my income while they pay 5% of their income?