Misc: it's a 'homicidal' phrase for achieving two goals with a single effort?

Questions

In 1922 Henry ---------- demonstrates his helicopter to US Bureau of Aeronautics. ?

In 1940 Communist govt installed in---------- . ?

In 1944 ---------- [Jesse Kuhaulua] Hawaii, 1st non-Japanese sumo champion, born. ?

In 1948 Brian ---------- rocker (Here Comes the Warm Jets), born. ?

In 1955 Pope Pius XII ex-communicated Argentine President---------- . ?