Tech companies should actively search for depictions of child abuse. To do this, they would have to undermine the encrypted communications of all citizens.
Time and again, politicians hope to get a grip on child abuse by technical means. Remember the plan of the then (German) Federal Minister for Family Affairs, Ursula von der Leyen, to make it more difficult to access images of abuse by means of an easy-to-circumnavigate view protection from websites. It failed in 2010 due to massive resistance from civil society.
Source article in German on Heise.de