Here is what my (old, in fact my late Father's) Missal has to say on the subject.
This, the fifth Sunday in Lent, takes its name from its being the day on which Holy Church begins her solemn and mournful commemoration of our Lord's Passion. Henceforth, in the Divine Office, hymns in honour of our Lord suffering, take the place of those proper to Lent; the Preface of the Holy Cross is said at daily Mass; the psalm Judica Me Deus, and the Glory be to the Father are omitted, as in Masses of the Dead; and the portions of the Holy Gospels appointed to be read, are those referring to the plotting of the Jews against Christ, and to the incidents of the last days of his ministry upon earth. Very striking is the veiling in churches - in allusion to the words 'Jesus hid himself and went out of the temple' read in the Gospel of the day - of all the crosses, statues and sacred pictures, at other times so helpful to the devotion of the faithful.I have blogged before about Passiontide, and the suppression thereof, both here, and as a followup, here, so I won't go on about it any more.
However, do notice that many churches have reintroduced (and some of course had never abandoned) the veiling of the statues and crucifixes today. But one wonders why? (Although I am of course in favour.) But what do they think they are doing? There is no more Passiontide, and the Gospel read at Mass today was the woman taken in adultery, not Our Lord's declaration that 'Before Abraham was, I AM' and his subsequent leaving the temple.
The integration and resonance of tradition has been lost, and we are the poorer for it.