None.

An elderly man is thrown down a flight of stairs

Multiple but mild battle sequences are spread across this 4-part anime, as typical in the Pokemon anime franchise.

In episode 2, a member of Team Rocket pushes a man down the stairs at the Pokemon Tower. At least in the Japanese version of this episode, there are some mild references to death of Pokemon, including the fact Marowak/Garagara has been killed.

In one scene in episode 3, there is a still shot in which a man can briefly be seen from a long distance holding a scalpel, making it implied he has been forced by Team Rocket to use it against a Pokemon, in relation to the research about a Master Ball.

At least in the Japanese version of episode 2, "bastard" is said once. Both in the English and the Japanese dub, "snot-nosed brat" is mentioned by a Team Rocket member, while in the Japanese dub "that damn brat" is uttered after a Pokemon battle between Red and Team Rocket.

In episode 3, the Boss of Team Rocket calls Red a "brat" three times, and "fool" once, all in the Japanese version.

None.

People morn over their dead Pokémon in a cemetery

The Pokemon battle sequences are mostly mild, so no adults should worry about showing this to their children.

In episode 2, Cubone/Karakara has lost his mother Marowak/Garagara, who is said to have been killed in the Japanese version, because of Team Rocket. This may be kinda sad for some children.

Also in episode 2, characters go into Pokemon Tower, which is said to have been haunted by some real ghosts. Some scenes may be a little bit scary for some younger children.

In episode 3, Team Rocket has hijacked a company, and appears to be kinda cruel as the team forces some scientists to finish a Master Ball.