Knowledge is power, but only wisdom is liberty - Will Durant
No matter how hard we try to censor and filter things out for them, kids are like sponges, picking up on everything we say and do even if they don't fully understand the meaning of the information they've absorbed. It's part of our job to help them make sense of that information.
In my view, the best times to impart our values is when we capitalise on so called teachable moments. It is in the act of living life that they see our values play out organically. It's all well and good to give them a didactic lecture on the merits and demerits of virtue ethics but you'll put them to sleep. Kids will learn more from watching you and seeing how you handle conflict and problems in the heat of a moment.
Make the effort to ask them questions about their thoughts and feelings about how they saw a particular situation. Ask them if they thought you ought to have acted differently. Ask them if they would have acted similarly given similar circumstances. Obviously...
Sometimes kids have a hard time talking to you about things when they need the most help. Learn to use emotional intelligence and empathic connection to gain co-operation without the friction.