Published Date: 2023-12-22 04:00:03, Category: News (671118)Time: 20:09 min, View Count= 40 ( + More Social Media views ) , Rating= Title: ABC World News Tonight with David Muir Full Broadcast - Dec. 21, 2023Keywords: ABC World Tonight David Muir Full Broadcast - . 21, 2023 Description: New video shows an armed student who police say opened fire at his university in Prague, killing at least and wounding two dozen in the deadliest mass shooting in modern Czech history, Tom Soufi Bu