This is why so many of our activists start protesting the day they retire!
Yes, we have lots of people in responsible jobs, they either take the risk, or take actions which do not break the law - it is entirely up to individuals how far they go.
Lots of careers are fairly safe, even if you get a criminal record for environmental protests - it isn't as limiting as criminal records for other crimes. Lots of scientific organisations, for example, don't penalise employees who are involved, nor do many meteorological organisations, some political and legal organisations, etc.
I am a teacher, and yes, if convicted I am at risk of losing my job, however, my head supports environmental protests, so I might not - but anyway, I am near the end of my career now anyway, so it matters much less.