this generation" refers consistently to Christ's own evil generation.
In Mathew 17:17, what generation is Jesus referring to? His Apostles? So it seems. At the Olivette so it seems that Jesus iss referring to his contemporaries evil generation but closer reading reveals that since no sign would given to that evil generation, this generation at the olivette refers to his disciples who were given the sign: “ What will be the sign of your parousia. Jesus proceeds to give the sign not the the evil generation which no sign would be given to except the sign of Jonah, but the sign would be given to his disciples, the generation that would not pass away until all these things occur. Similarly if you apply to 1914 the sign and the generation it refers to the anointed and not to people in general.