Every time I think my respect for him can’t sink any lower …
人人得以誅之 (ren ren dei yi zhu zhi) - I think it’s a quotation from somewhere, but the meaning is pretty clear. I’m sure he’ll claim he was just being poetic/metaphorical (after all, who would believe the KMT would ever want to kill anyone? Or that anyone would try to shoot the president? 
)
You’re probably thinking of Thomas Lee: [Pan-Blue Thomas Lee says shoot President Chen Dead!?