1. The erroneous use of "troop" as a synonym for "soldier". A troop of soldiers generally consists of more than one. The word that the illiterate reporters are looking for is "trooper". A trooper is a member of a troop. Military Hierarchy

2. The silly word "meme". It is quite identical to "idea" which has been around much longer and does the job perfectly. Ideas can be pernicious and spread, like Marxism, etc. The word "meme" conveys no useful information that is not already inherent in "idea".

3. The tendency of laws and legal documents to be completely incomprensible. I once had an insurance policy and I wanted to find out what it actually meant. I took it to a friend of mine who was an attorney and had spent his entire career in insurance. My friend had absolutely no idea what the policy meant.