Theo had planned to remain silent and observe this little gathering, and really it was quaint that they thought themselves so bitter after a year of hardship at Hogwarts. All the talk of fighting if it came to it, of not trusting the Ministry or the Order, well that was something he could understand. He worked for the Ministry, but he didn't trust it, as an institution or the individuals in charge.
And then Corner, who had a truly terrifying beast next to him that Theo had made sure to sit well away from, singled him out. He should have expected it, because of course it had been the Slytherins students' fault that the school was taken over by Death Eaters. They alone were responsible for the torture to other students by the fact that they existed and were, for the most part, left alone by the Carrows.
He smirked at Corner, and took a casual sip of wine before answering. "You know how well they took to non-compliance. Don't fool yourself that it stopped at the Slytherin common room door. Most of us just had a lifetime of learning the consequences already."
It was perhaps more information than he'd meant to divulge, but Parvati and Luna both knew some of that already, and it was nothing he hadn't told the Ministry at the time. Plus, Michael had passed him off, and he'd already had half a glass of wine and his mouth did tend to run off with him under those circumstances.