Safety is not first priority
Case study closure of Merwede bridge for freight traffic due to danger of collapse, RijkswaterstaatA claim cannot be made any stronger. This is the way it is, full stop.
This tweet highlights the competing interests of groups. The person writing the tweet seems to believe that safety should be number one, but informs us that there is another group of people for whom that is not the case.
Contrast this with a common interest. Say that within your group (in this case Rijkswaterstaat), safety is also number one and explain how this shows. Explain, for example, what safety standards and values are pursued, what safety procedures are in place. If it is not possible to align yourself with the interest that is important to the other person, you can emphasise another common interest.
Betrekkende taal Groepsvorming 1