@zasad@. I disagree. They cannot remove their opponent because it is not easy and this is also not a very simple mission. We are talking about the Donald! He might make himself appear similar to an idiot, however, this man has won the presidency which implies that he is not really stupid. This man should not be underestimated and I am quite certain his political opponents are very much of this.
In any case, you are correct, these opponents of Trump has much more difficulty in assassinating him because he is president of the most powerful country in the world, however, they can assassinate the Donald's allies like Charlie Kirk.
If Charlie Kirk's murder is another warning to Trump, it seems foolish. Trump is no coward and won't be intimidated by the threat of assassination. If it's now legal to assassinate US presidents or their supporters and blame it on a sick hater, then I don't envy the next president.
You haven't mentioned the situation in Germany. Is there an official crackdown on parliamentary candidates there?