Today on Boston Public Radio:

We opened lines to callers to hear your thoughts on Sen. Mitt Romney’s secret Twitter account, and Mick Mulvaney's backpedaling of last week’s quid-pro-quo admission.

WGBH News analyst Charlie Sennott discussed Canada’s federal election, as well as the UK Parliament’s vote to delay Prime Minister Boris Johnson’s Brexit plan.

Filmmaker Michael Kirk discussed “Zero-Tolerance,” the latest documentary from Frontline,* *on President Trump’s immigration policy and the forces behind it.

Award-winning* *author Tim O’Brien joined to discuss his new novel on parenthood, titled “Dad’s Maybe Book.”

Irene Monroe and Emmitt Price III, co-hosts of WGBH’s All Rev’d Up, discussed the role of racial slurs in light of a Wisconsin high school's decision to fire a security guard for repeating the slur used against him.

TV expert Bob Thompson reviewed Amazon’s new series “Modern Love,” as well as HBO's “Watchmen,” and Netflix’s “The Kominsky Method."