Rep. Paul RyanPaul RyanOvernight Regulation: Senators call for 'cost-effective' regs | FCC chief unveils plans to roll back net neutrality Overnight Tech: FCC chief unveils plan for net neutrality rollback | Tech on Trump's sweeping tax plan | Cruz looks to boost space industry Not too shabby: Trump tax plan nails corporate rate, errs on income MORE (R-Wis.) was met with boos at a Wisconsin town-hall event this week as he defended Republicans' plan to extend Bush-era tax rates for the wealthiest individuals. 

A video posted by the liberal site Think Progress shows a back-and-forth between Ryan and a constituent who, according to the site, described himself as a "lifelong conservative."

Suggesting the middle class is "disappearing," the man says the top 1 percent of income earners is taking in a far greater share of income. He asks Ryan, the architect of the House GOP's 2012 budget, why "we are fighting to not let the tax breaks for the wealthy expire."

There's "nothing wrong with taxing the top because it does not trickle down,” the man says.

“We do tax the top," Ryan replies, prompting hoots and boos from the audience. 

The Ryan budget plan, which passed the House last week, would extend current tax rates, then reduce the corporate tax rate and the rate for the top earners from 35 percent to 25 percent.

President Obama's budget would allow the Bush-era tax cuts to expire at the end of 2012 for individuals making more than $200,000 and families earning more than $250,000.

MSNBC's Rachel Maddow highlighted the video on her show Wednesday night.

Watch it here.